Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e96d81a18e5b7e…

MALICIOUS

PDF

68.0 KB Created: 2021-09-25 00:52:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 76582582475f30905d68ff8554507326 SHA-1: 2714858b3a60e77f534f21c829a51511812fe3ce SHA-256: 60e96d81a18e5b7e5120d2d67cb905b00b938fccb1633857033352e6dd627404
164 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites acting as link farms. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of a 'download' button lure further supports a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 7

  • 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.
  • 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 http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614d3cc749698---sefodipopokenid.pdf In PDF document text
    • http://daehnfeldt.com/userfiles/file/mukumoxelimeteva.pdfIn PDF document text
    • http://h04ydivan.ru/userfiles/file/82769378758.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614369b648114---22112494057.pdfIn PDF document text
    • http://budgettranslation.hu/sites/default/files/file/83371692225.pdfIn PDF document text
    • http://akademibt.com/resimler/files/gekopujirepaw.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/161302a32b3a4c---68618143973.pdfIn PDF document text
    • http://ride-on-earth.com/images/blog/file/noziketijinipulo.pdfIn PDF document text
    • http://ros-audit.com/i/up/file/56603859003.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c98e3c5f4b---33643066796.pdfIn PDF document text
    • https://pomacanthe-art.fr/imagebeforeafter/files/74113344224.pdfIn PDF document text
    • https://www.aledrukujemy.pl/ckfinder/userfiles/files/37143108054.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/dcb6fd59e3ddacc5d0be8b2c9168c6af/xavogonikebaju.pdfIn PDF document text
    • https://ezastupitelstvo.sk/editor_uploads/system/files/wumatapizixofanozakag.pdfIn PDF document text
    • http://wroclaw-effatha.pl/grafiki/file/sivukokanupenup.pdfIn PDF document text
    • https://shellserva.nl/docs/Image/file/lerowi.pdfIn PDF document text
    • http://demenagements-remond.fr/userfiles/file/20210911211947.pdfIn PDF document text
    • http://saigonford3s.com/uploads/2021-09-16/images/files/28887059577.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/27536798282.pdfIn PDF document text
    • https://apexsafetyproducts.com/ckfinder/userfiles/files/10220361006.pdfIn PDF document text
    • http://bpsstudio.hu/uploads/68615385588.pdfIn PDF document text
    • https://aznamaste.com/ckfinder/userfiles/files/67356856832.pdfIn PDF document text
    • https://ln80.cn/filespath/files/20210922172222.pdfIn PDF document text
    • http://freeorden.com/media/file/93894890356.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=vpnhub+android+tvPDF link annotation
    • 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_off0000afad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7BF 14408 bytes
SHA-256: a027b945f52a0ac456a6d744490a308075e5328bdacc968327b090f5f2e6992b
font_02_sfnt_off0000ebb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB4 10416 bytes
SHA-256: a5abca667abfe634d16c487d709843fab13a86adfe590f63a88fb9f01090a886