Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e926f1d2529470f…

MALICIOUS

PDF

84.6 KB Created: 2021-08-26 04:35:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 77d11e6cf58755acb924024346abd54b SHA-1: 6d9796c09206653b028c71d88b2a6155f2cc3413 SHA-256: 1e926f1d2529470fe7976e358dc4bdc490cdf2002b1b18709fc6643f82db0370
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains embedded JavaScript and numerous links to compromised websites, indicating an attempt to deliver a malicious payload. The presence of a visual download button and callback lure heuristics further support a phishing or scam-related attack pattern. The ClamAV detection confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pistant.ru/uplcv?utm_term=universal+science+book+7+pdf+download PDF link annotation
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/0a28595df7bf02bb03900b95b7af4af3/84275437516.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840e45db8a4---75737467027.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e55092d83---62179001021.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161119954ac272---xoserozulelolenozo.pdfIn PDF document text
    • http://coatsofarms.com.au/ckfinder/userfiles/files/92987924469.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/74ad2ec65b62e8c073fd1c62a1e5bc5f/fokutowuwigifigesila.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/spdvk5utuhrd6138tpo6hl6iv5/jirajuduruxedapabusajix.pdfIn PDF document text
    • http://rhoptik.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/lenokaxakakevoxo.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/c170f9688b18d41d0fe699dc42ad2156/79509444010.pdfIn PDF document text
    • http://universitecentrale.net/uploads/FCK_files/file/1478476833.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/ngcm65bnput317d5hu0lilau5q/jorijimozepagemerol.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/av9lfg7ohdb9t0mjaincbl4gji/pujabarudofowosagufed.pdfIn PDF document text
    • http://holmeslawfirm-iowa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/53977659237.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/efb5257c430171a74216b1f27ef674b8/lazivama.pdfIn PDF document text
    • http://www.superior-inkjet.com/login/ckfinder/userfiles/files/65783708022.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1e308d3e4---69116833160.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/zojakilukifenupere.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/4a80632fc0f7cc13ce18d0727fac02d4/nanetubewubelogaf.pdfIn PDF document text
    • https://brs.jo/userfiles/files/97339506242.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6d2f09984---tofodo.pdfIn PDF document text
    • http://kasintorn.com/images/upload/files/xigamedu.pdfIn PDF document text
    • http://www.idukkidiocese.org/files/js/ckfinder/userfiles/files/94037236400.pdfIn PDF document text
    • https://pacantioquia.org/aym_image/files/56076710597.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fbee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBEE 10956 bytes
SHA-256: b502b8714c19ea3c453500d75af7118aa8362bf9c99e5273a39004f02bafefa5
font_02_sfnt_off0001155b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1155B 17632 bytes
SHA-256: 661243db5fc16bbf0be79967fe7d61614789c5f1f3f542d723f4f2ef656ffb59

Open this report in the interactive analyzer, or submit your own file for analysis.