Malicious PDF — malware analysis report

Static analysis result for SHA-256 19a936a2a80514b7…

MALICIOUS

PDF

76.3 KB Created: 2021-02-17 19:02:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a7ad18c05bb8db7eee525c05a80348b2 SHA-1: aaa2fbba4d846d5602c725faa23c4c9b624f330e SHA-256: 19a936a2a80514b7a2f23df35300ebd0b024a9c1e0d1bd8eb42cb8ee6e77010a
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'baarspo.ru', which is likely a phishing or malware distribution site. The document body, though heavily garbled, contains text related to 'Richard williams the animator's survival kit', suggesting a lure. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly indicate an attempt to redirect the user to a harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/strik?utm_term=richard+williams+the+animator%2527s+survival+kit+%25D0%25BD%25D0%25B0+%25D1%2580%25D1%2583%25D1%2581%25D1%2581%25D0%25BA%25D0%25BE%25D0%25BC PDF link annotation
    • http://koprovk.xyz/35709493644o8orn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427287/normal_6009439dcac91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387589/normal_5fdb7d1e9a2cb.pdfIn PDF document text
    • http://winfreeiphone.xyz/85135819862rqyq2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530990/normal_5fe9d2126c23e.pdfIn PDF document text
    • https://cdn.sqhk.co/napoxanu/sHMNiar/tisun.pdfIn PDF document text
    • https://cdn.sqhk.co/wizevomorofe/Xgcgjgg/79833175318.pdfIn PDF document text
    • http://remastacer.com/luralanagojibowodipodox2qtf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375504/normal_6021c2e8694d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373502/normal_6025257f9a26e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419826/normal_600fee7377a86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386094/normal_6003422fde195.pdfIn PDF document text
    • https://cdn.sqhk.co/lebudawojafi/ifhiibq/gozejajofaluwuvanave.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fekife/83808184968.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/tafadenojijekoti.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/8701722000.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_off0000dc25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC25 6340 bytes
SHA-256: 04ab870aa83fade1720bc325f8bfa791cb9d3a06eea276f86f5a4dceca9721bc
font_01_sfnt_off0000f07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07D 15592 bytes
SHA-256: eb98bd47b15e271a4e4807952602f5d6d4ff47464ac2698f11ddd6a5894ab294

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