Malicious PDF — malware analysis report

Static analysis result for SHA-256 5abf64b8dc4d59f9…

MALICIOUS

PDF

79.0 KB Created: 2021-03-17 19:31:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 04f495c30bcf53a6e9c5596968b9bf75 SHA-1: 27ac0c3f3b705087c3d08f1781f2005ef8b2c93d SHA-256: 5abf64b8dc4d59f9938de8e536a59f0ba9c3f7abb7c81756d70fcd1499e99404
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

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
  • 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://seumenha.ru/strik?utm_term=what+do+you+call+a+story+with+a+moral PDF link annotation
    • https://gifetapajuloper.weebly.com/uploads/1/3/4/6/134682222/fizugiwiwit.pdfIn PDF document text
    • http://goods-amzon.com/adventure_games_free_for_laptop10xl1.pdfIn PDF document text
    • http://leadtop.co/pujodenob4s3ia.pdfIn PDF document text
    • http://clubstore.info/jawopitikekemesinamejqjy9p.pdfIn PDF document text
    • http://vereffka.xyz/samsung_a70_actualizara_a_android_10ekjg0.pdfIn PDF document text
    • http://raisinshq.pro/can_you_connect_2_bluetooth_headphones_to_smart_tv3xgzi.pdfIn PDF document text
    • https://wegujelad.weebly.com/uploads/1/3/0/8/130813898/xetivazeg.pdfIn PDF document text
    • http://nudistoff.club/finefazovazog0sh6o.pdfIn PDF document text
    • http://my-favshopd.online/51069257663c9qkg.pdfIn PDF document text
    • http://idem-peshkom.ru/monsoon_annual_report_2017yhifm.pdfIn PDF document text
    • http://kartaidatodemeleri.com/518818910828w6bg.pdfIn PDF document text
    • http://domainlimax.xyz/80371249037jy1ds.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d4bcd744-2348-4fe3-9006-05b2fcbd3cbd.filesusr.com/ugd/704566_d4b2854d26e045aa93f1be23e648886f.pdf?index=trueIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_d04111d3e507456b9f8b201ff51d0e32.pdf?index=trueIn PDF document text
    • https://c5b3e1fc-3b55-407d-a8d9-2bfa6c9015c1.filesusr.com/ugd/6df244_f7f7e2c4a17a4cca962c77a3d4f3a100.pdf?index=trueIn PDF document text
    • https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_958eeb7311bb4543b02b3128e3ff8b39.pdf?index=trueIn PDF document text
    • https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_80bf3ce67a944c6cb9acc52f00b27f4a.pdf?index=trueIn PDF document text
    • https://0dd4521b-3e41-4083-9bcc-807cce03ae78.filesusr.com/ugd/cfe2e9_f56f1981e157440f89461d2945c81983.pdf?index=trueIn PDF document text
    • https://7f1d4f38-7308-4051-b389-b8ed31312188.filesusr.com/ugd/e948c1_5f9f1b59592d4782880f75b5a8cf6ade.pdf?index=trueIn 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_off0000f8ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AE 5388 bytes
SHA-256: b7cb5cdbabc5a261839e7fd27c23458915fea90635d96a103ec4fac09c254225
font_01_sfnt_off00010af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF0 10520 bytes
SHA-256: 41a88b881423d748c1e4c4313d753acdce78aa5e2cb5dd36051a204179ed9c98

Open this report in the interactive analyzer, or submit your own file for analysis.