Malicious PDF — malware analysis report

Static analysis result for SHA-256 391980a1396b49dc…

MALICIOUS

PDF

72.8 KB Created: 2021-02-27 18:21:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 76f3510bccb283053bb0c0c6dfd11202 SHA-1: 548282039fcabef73c933eb38a8b3f9715cea7eb SHA-256: 391980a1396b49dc660a1521383f701b3c9d2412b92d273fff93a00b8ca59fb9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://nipisod.ru/award?keyword=how+does+migration+and+cultural+diffusion+work+together PDF link annotation
    • https://cdn.sqhk.co/remowiwa/ihgivhj/dewej.pdfIn PDF document text
    • https://pezobarifad.weebly.com/uploads/1/3/5/3/135394950/vuzanizepizepumorid.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/WTq1Wdb/1611354287.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/5352725.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/ihjiigj/italian_sandwich_spot_near_me.pdfIn PDF document text
    • https://jaluwaxigesife.weebly.com/uploads/1/3/4/6/134640648/sipototeguzum_mimatipe_mufemivobexumim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_5fd1bac1f2e36.pdfIn PDF document text
    • https://cdn.sqhk.co/tisumusef/eifVeUX/efootball_pes_2021_pc_system_requirements.pdfIn PDF document text
    • https://meruxanige.weebly.com/uploads/1/3/1/6/131636855/rotolun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/5029460266.pdfIn PDF document text
    • http://merovuditipin.onlinewebshop.net/30888637951.pdfIn PDF document text
    • http://belibivizonojo.myartsonline.com/71858044201.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/axa_sigorta_ikayet_formu.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_off0000e013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE013 5552 bytes
SHA-256: 963e50cfe116add33ab0380d83b1cf59a24700ae35ee18d2fffc60bcfb863fed
font_01_sfnt_off0000f2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D8 10492 bytes
SHA-256: 128189b46312e6aef07acfbc975e2e6830468ee4e9cba7d0b07db6f69a658c31