Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4092033de24ee7…

MALICIOUS

PDF

144.0 KB Created: 2021-07-16 07:06:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7fafaed83ff06d23bb435dac28d8f9b3 SHA-1: 3b650b7a2df2dd69c18d8a65c0b12184d2c88985 SHA-256: 7d4092033de24ee73e959dd1ac20386f941ae931e5ea00151deacf4f901593f3
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to compromised WordPress sites, suggesting an attempt to host malicious content or redirect users to phishing pages. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 8

  • 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.
  • 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://archism.ru/uplcv?utm_term=galileo+was+wrong+the+church+was+right PDF link annotation
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608e7ffc23fb8---gawidilegodotumeluro.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16083906cafa5c---43028149047.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160a32a2828f81---pinobobabuzojaxis.pdfIn PDF document text
    • http://olgapolyakova.com/files/files/titorubefezopasexudu.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/87759545211.pdfIn PDF document text
    • https://folklorebridge.eu/uploads/pictures/files/putegazesilivexawevafugu.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ccada76ab---96211916455.pdfIn PDF document text
    • http://baugeraeteverleih.de/benutzerdateien/36524401940.pdfIn PDF document text
    • https://hanyauntuktesting.com/contents//files/37359808585.pdfIn PDF document text
    • http://resetimpianti.it/reset/public/file/jamorakegelotuvidirejug.pdfIn PDF document text
    • http://wenxuezj.com/images/File/82954471424.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/05352217b0c917c5bb5f52d62fdb43ed/goxiposenuxijatudesekani.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/o5c1jippk95q8tun8a20nt8mv5/fokujasajage.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d9a8104ca28---31690667976.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/62a9c06338b455cb1832baaabf841340/nezopilurinitexifilov.pdfIn PDF document text
    • https://banghenails.com/upload/file/gonijazamu.pdfIn PDF document text
    • http://solarexperten.ch/fckeditor/editor/images/file/wedilekoloporowi.pdfIn PDF document text
    • http://plnjl.com/userfiles/files/dedofuweluruvizapovip.pdfIn PDF document text
    • https://fanaf.com/article_ressources/file/75426915581.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/t4dfsrfeg01btk0t1ebolotod2/77745269598.pdfIn PDF document text
    • http://thelonerangerfanclub.com/ckfinder/userfiles/files/62367860573.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ecb268362---14668446118.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/npgrfoanl62l25j288gn7d38kl/linijezoxesoxijiv.pdfIn PDF document text
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/223f07b58d4051b4006d009156905519/64213077799.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_off0001cede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CEDE 19172 bytes
SHA-256: 64e1c1b3106f8100f411613c58396855d03636d3f35b90aa22e97b430cae9ba1
font_01_sfnt_off0001ff96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FF96 10732 bytes
SHA-256: c6f52540efa7221002fe56d60c84aa775b3cfa2b85ea8214dc06ddec8045a426
font_02_sfnt_off0002184f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2184F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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