Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6760d8688e814f…

MALICIOUS

PDF

68.8 KB Created: 2020-11-12 21:35:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b7d6a729f6a09b9695f4ff0a4adabdce SHA-1: d78d3b9f6e56e9754191a3c6a9943e983fa79777 SHA-256: 2f6760d8688e814f955d136f70f20336ddc5e5c1d3abcb8f754838fdfe8d67f4
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 0.9998

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://trafffi.ru/123?utm_term=a+hat+in+time+death+wish+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387031/normal_5fa3958337766.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/b3883e.pdfIn PDF document text
    • https://vatewiwep.weebly.com/uploads/1/3/4/4/134482367/jizinatikirakefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384029/normal_5fa73ed0e1ddd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425772/normal_5f98fbac9106b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375702/normal_5f9394eab97c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369762/normal_5fa390db9d077.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/e0c982d6-75a4-4bc5-bad6-a010dee53b1a/lererosuminevitisinifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaab13d5-8308-4486-a4f3-35da5a12a8df/gifun.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/votuvazebodumipadegux.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/aliiolani_elementary_craft_fair_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/14245994539.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_off0000cf49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF49 5192 bytes
SHA-256: ff7a3a7c2ef5109721755ed64ef095fdb1d669fa9c60b8aaa7a20d152a12eb9c
font_01_sfnt_off0000e0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E1 10920 bytes
SHA-256: 30fe8ec5a7103845dc628404bef1185b3007c9f2d83755554e2346ea82d04a75

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