Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d0187e0b12a6da…

MALICIOUS

PDF

83.5 KB Created: 2021-04-07 21:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: da92e11a7bcf4b87bc264afc338595cd SHA-1: 3bf1d3ad547f179cb0c796f0ea24eda83e26b9dd SHA-256: 24d0187e0b12a6daa6af3023698de8e992dfd6186d04279113bf8aecc5e9130e
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' indicate that the document's primary purpose is to drive traffic to these external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xezojetit.ru/strik?utm_term=radio+code+for+2006+honda+civic+ex PDF link annotation
    • https://fusavufotopos.weebly.com/uploads/1/3/4/6/134634064/wudusorixabura.pdfIn PDF document text
    • https://cdn.sqhk.co/mijajijem/DAhcig6/verizon_messages_not_sending_to_one_person.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/ihhhaJm/87190340766.pdfIn PDF document text
    • https://tuxupurevulivi.weebly.com/uploads/1/3/0/8/130813143/muwuza-tipekerokedeja-setasorobudabom-wuzawa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368982/normal_60076e093cc81.pdfIn PDF document text
    • https://cdn.sqhk.co/kusasuzona/hdgh5oZ/tawezawemometumat.pdfIn PDF document text
    • http://gimemuwet.mypressonline.com/annamaria_testa_la_pubblicit.pdfIn PDF document text
    • https://nuwuzeparagagux.weebly.com/uploads/1/3/4/8/134883197/bfdd21.pdfIn PDF document text
    • http://lemakomude.sportsontheweb.net/91325945998.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369185/normal_5ff5eb03acc61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476566/normal_6009927219796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427282/normal_602c1eb6c7488.pdfIn PDF document text
    • https://radebijudowax.weebly.com/uploads/1/3/1/6/131607027/de1bf39d60f.pdfIn PDF document text
    • http://fegivate.medianewsonline.com/88563806246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449604/normal_6067cd616276d.pdfIn PDF document text
    • http://piriketag.22web.org/64810731232.pdfIn PDF document text
    • https://tilivugex.weebly.com/uploads/1/3/4/1/134108965/bakimuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://f3215690-35ba-4bce-915f-db1a6f912a1b.filesusr.com/ugd/d32599_1aeccab8f8394586851c41bbe9973188.pdf?index=trueIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_f2b6ef90f25d40109e508b03a13ebd0d.pdf?index=trueIn PDF document text
    • http://zutawatupasexap.rf.gd/united_airlines_gate_information_houston.pdfIn PDF document text
    • http://timaroxakex.epizy.com/nidomolunagefevikifiwema.pdfIn PDF document text
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_a2c2d4408b614799b7d5cfa8f36ff89d.pdf?index=trueIn PDF document text
    • https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_5704e71ced6e4a9fa4a1c8fbe65acfc1.pdf?index=trueIn PDF document text
    • http://kawojimulogizef.rf.gd/pojumarefatokiwafitul.pdfIn PDF document text
    • https://acda325f-ee3b-40e4-882f-fabc489a6840.filesusr.com/ugd/23b3d3_4f9c8637c7b74515858b49f2b818a1c2.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2C 5172 bytes
SHA-256: f03248a12b0d8daf97a7e7d684f51724e1400a81751b3714c3c066f74366c796
font_01_sfnt_off00010db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB5 10840 bytes
SHA-256: eb166d9f201f8b57d73d1425344034a26e40ef2f4bb24a977b29dc2bd8565774
font_02_sfnt_off00013217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13217 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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