Malicious PDF — malware analysis report

Static analysis result for SHA-256 79120d415b15c05c…

MALICIOUS

PDF

74.3 KB Created: 2021-02-27 11:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3fa17861152eb4e2fbbcf330dd5f4b06 SHA-1: 8000c1cf29b6e36da39ff8cf21b62ad3f4d514c6 SHA-256: 79120d415b15c05c99b1f420b2bd0f107129c93f10c0383d1ef9abd14ab42128
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://golowaki.ru/aws?utm_term=pc+troubleshooting+process PDF link annotation
    • http://bitcoins-profits.com/30539051934iv57d.pdfIn PDF document text
    • https://cdn.sqhk.co/jagibuvat/gHvjbsQ/big_bang_kpop_top_instagram.pdfIn PDF document text
    • http://ewop.space/nibojevirrna.pdfIn PDF document text
    • http://itwow.info/dil_hai_tumhara_full_movie_hd_1080pnp3iy.pdfIn PDF document text
    • http://ses-paypal.com/30060081326p9hly.pdfIn PDF document text
    • https://fobaripiso.weebly.com/uploads/1/3/4/4/134443650/b87fd162.pdfIn PDF document text
    • https://livuwijonirib.weebly.com/uploads/1/3/4/7/134732661/nisebijexoti.pdfIn PDF document text
    • http://vitolebizojigok.22web.org/dawupuvigaromux.pdfIn PDF document text
    • http://sosunimepewe.22web.org/pomex.pdfIn PDF document text
    • https://rabidibizuzej.weebly.com/uploads/1/3/4/6/134648686/551274.pdfIn PDF document text
    • http://tufodudem.mypressonline.com/18942180600.pdfIn PDF document text
    • http://newberginvestmentproperty.com/sapasulazarfd72c.pdfIn PDF document text
    • https://xaredeni.weebly.com/uploads/1/3/1/8/131871979/9761321.pdfIn PDF document text
    • https://rajuputodetu.weebly.com/uploads/1/3/4/6/134682309/pipororodivawi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mibodezoboro.rf.gd/fifupixojojagugolegi.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE920 5128 bytes
SHA-256: 65bce49faf1d25d1b7648b8509009262e5b8835ef30e27f7224ac0b80c10c5be
font_01_sfnt_off0000fa8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8B 10008 bytes
SHA-256: 6dd890a210cf27a3d5dd7919434c526671cfe0624fb855b9898c81e1b8ec4930