Malicious PDF — malware analysis report

Static analysis result for SHA-256 9611f58fee1197b9…

MALICIOUS

PDF

72.2 KB Created: 2021-04-29 09:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f73da7104237f0358cbeffe22d4af207 SHA-1: 47b7dae0aa742cf500cab5057acc006589a10173 SHA-256: 9611f58fee1197b9d88fbfae943634fe0fb6321ed324f165f24393c1f975ce69
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://xajibur.ru/strik?utm_term=who+carries+greenworks PDF link annotation
    • https://cdn.sqhk.co/pifizumux/chawe4Y/vigolegutosifolat.pdfIn PDF document text
    • https://cdn.sqhk.co/ketusugedi/hfQ93ff/kimipepasuwuzumemulojemuf.pdfIn PDF document text
    • http://help-copyrightservice.xyz/epson_5030ub_4kkg95q.pdfIn PDF document text
    • http://ar-foto.art/motabavokomijana5nojk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://69df74eb-9f83-488d-97bb-abb55063df61.filesusr.com/ugd/f34323_6c06c9ef24d24330a08fa64acc4b4e77.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fedure/chronicles_of_narnia_prince_caspian_movie_ratings.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/5072374159.pdfIn PDF document text
    • https://264cdfe8-48fc-440e-bff3-938583425051.filesusr.com/ugd/cd20dc_96735330f6a44e61af233fa4e6cdc683.pdf?index=trueIn PDF document text
    • https://fc060a1e-8c1d-4b7d-bafd-75f79d4c6355.filesusr.com/ugd/c0a468_3c070fc9645947cb88cf8f10d05e6574.pdf?index=trueIn PDF document text
    • http://xibiwoziveva.epizy.com/sapivojujulawonezivotele.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/gezapizebunu.pdfIn PDF document text
    • https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_75f9b49e417c4f4a94078cda523598d5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/britney_spears_2007_vma_performance.pdfIn PDF document text
    • http://domidezoraz.epizy.com/best_dungeon_and_dragons_books.pdfIn PDF document text
    • https://eda93683-a6ca-45e9-8056-ca7adea7f1dc.filesusr.com/ugd/d655db_2796a26c4c604cee92e7b6d1387429c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zowibatev/79266878484.pdfIn PDF document text
    • http://senakebuna.epizy.com/vusovodateri.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC1 5200 bytes
SHA-256: 7eccb71ccdb98f8298e22005887223dbfea36f98eb91cd9620b3c0e8db94c842
font_01_sfnt_off0000ef84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF84 10708 bytes
SHA-256: 9d8abc3b1487cb4f83ebb70680ec49fe526a6a17597018524d6d2056648dc535

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