Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9201617b35ab05b…

MALICIOUS

PDF

79.2 KB Created: 2021-05-22 09:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 028f08bd550a728206d7ffef9eea92fd SHA-1: b3683dd8941fa14417db773ca228b5443b4ad669 SHA-256: e9201617b35ab05b3dec31b87cc68f261bd8b32a8c8e890e939b955ae15cc4fa
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. One prominent URL is https://maypoin.ru/strik?utm_term=bagas31+pes+2020, which is likely part of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://maypoin.ru/strik?utm_term=bagas31+pes+2020 PDF link annotation
    • https://fuvepuzineg.weebly.com/uploads/1/3/4/4/134463404/savoxavubob_bubefemowivupa_ripexezigirapoz_lobazugobad.pdfIn PDF document text
    • https://tizemafuniture.weebly.com/uploads/1/3/4/6/134636649/1f5e7afbb1f88a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_604bad5e85d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383912/normal_6012a43c40a52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479226/normal_6051239a36824.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/8415042.pdfIn PDF document text
    • https://golobixapisiz.weebly.com/uploads/1/3/4/6/134653183/kelibexeburugix_fefigogamunixop_vazitusujivegef.pdfIn PDF document text
    • https://tivubikujadilav.weebly.com/uploads/1/3/4/5/134527100/pematoguretakeras.pdfIn PDF document text
    • https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/c651aa704403b52.pdfIn PDF document text
    • https://bojufare.weebly.com/uploads/1/3/1/0/131070992/4248565.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378605/normal_5feb57e46add4.pdfIn PDF document text
    • https://genolawibiwiz.weebly.com/uploads/1/3/4/3/134316454/kagufip.pdfIn PDF document text
    • https://ponixetuga.weebly.com/uploads/1/3/4/6/134668384/2303876.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d2c77bf-9040-482a-9f4d-88178ee0069f/unblocked_games_66_super_mario_crossover_2.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/boss_micro_br_manual_portugus.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/56900191131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd13383a-8a03-4ae2-baa3-b943d78913ae/wupetinebobew.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/84161178402.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/sogaginidesuwev.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_off0000f0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A4 5400 bytes
SHA-256: 5d29194c9c86cb3b42e974900ab6fccf5050cae9124f86e51ae3adeaf99cee70
font_01_sfnt_off00010323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10323 15264 bytes
SHA-256: 6d876627cdfcfb6b1eaf659257a6d5910899a2e0b44775ee1b452c344fac549f

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