Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa9e0eb079bfb6d…

MALICIOUS

PDF

71.8 KB Created: 2021-06-19 05:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4c02156349a2c2f1c2d4a853ee721ad4 SHA-1: 949f97e2e8a7d46da8610587ac0c4d29b5520771 SHA-256: 7fa9e0eb079bfb6d656a0f546a39cbd2af335df083e1b7a6ad9e605d79091613
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file that functions as a link farm, directing users to various compromised websites. The document body, though heavily obfuscated, contains text related to movie song downloads, suggesting a phishing or scam lure. The presence of multiple links to potentially compromised CMS upload directories indicates an attempt to host and distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://simonhoirup.dk/userfiles/file/13803014308.pdf In PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16095ffa6cefed---jovakivosejumu.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/30301394836.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/11410424846.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/7gab29ql8udh11p7s9632e6bf5/18254921719.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ba4abaf5c---50314759613.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b535324a42---miliguzetomov.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f778b975aa---89808808025.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/upkh4ab16efea1ao7rvfomuvv2/gexoja.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/55da7d16fb0e0e0ada89e8c270c34859/20143333353.pdfIn PDF document text
    • http://ghnservizi.com/file/46387243482.pdfIn PDF document text
    • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/48976164476.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/48036109415.pdfIn PDF document text
    • https://total-sport.pl/img/upload/files/76533228983.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/2452536882.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=moondram+pirai+tamil+movie+songs+downloadPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA98 5436 bytes
SHA-256: 10166358f3fe1be1d8ab8dfcd24cb0590d70074075855beb7f682f86007e91b8
font_01_sfnt_off0000ed1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1A 10736 bytes
SHA-256: cd68c181156f165e4dcab1798fcb34266500fd048b354af089d6b3f856c15038