Malicious PDF — malware analysis report

Static analysis result for SHA-256 68574e323193681a…

MALICIOUS

PDF

72.7 KB Created: 2020-12-30 23:34:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ee02b25aa9223226145645c380f813c7 SHA-1: 115cbbd28586c45550959e50bd280de1f2156ede SHA-256: 68574e323193681a88a79b3f58092afa40004cb861d12d3086e09b5fc4957a78
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://traffset.ru/123?utm_term=bil+jac+puppy+food+30+lbs PDF link annotation
    • https://dafelubuvotaxid.weebly.com/uploads/1/3/4/7/134753950/9416463.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404299/normal_5fa9a29dc1587.pdfIn PDF document text
    • https://fozuxuvaporoj.weebly.com/uploads/1/3/1/8/131856883/dadivufij_sigafi.pdfIn PDF document text
    • https://lezafopiga.weebly.com/uploads/1/3/4/6/134628758/4f6a5172.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://uploads.strikinglycdn.com/files/ac46c49f-a76e-4e23-be35-93e4128afa23/kobokubuloxogidebinigax.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/49013561337.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa1ab99-915b-452f-8e88-5ea258e9eedf/21842828324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f528ddcc-de62-42f8-be5c-fc2afca7d7e0/wasexowajujax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daf3eb8a-ff99-4ed1-a527-6e9488ebbf97/papers_please_wiki_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f10a532a-71c0-4409-b512-442e1aadd59c/the_craving_mind.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/tabeer_ur_roya_complete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6dd16de-53b3-4dcc-80b0-384c0b7b93c0/baba_yetu_music_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAE 5304 bytes
SHA-256: b11d780adcbc2fe52248d7687b33d2e8ff7d980cfa2b347520843fb1dc40785a
font_01_sfnt_off0000e1b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B5 10980 bytes
SHA-256: 5af209bf5d09454505e8d102459c2e6594fb16dd9417d3466a3a64f88303372f
font_02_sfnt_off000106cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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