Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e368fbde1077fa4…

MALICIOUS

PDF

81.7 KB Created: 2021-03-09 08:10:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2f056790f2cd4019437b01358c74f88d SHA-1: 01454e9e4de3941435d6571770b0a698ac7ef9fe SHA-256: 7e368fbde1077fa4c305ed281593720471c4ceb5a6e8576b1fcdf6b6da123f94
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to exploit users via external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://mezovuduw.ru/award?keyword=azaan+ke+baad+ki+dua+pdf PDF link annotation
    • http://bolozofer.22web.org/watepaxijakavenit.pdfIn PDF document text
    • http://pipabineki.22web.org/mowejewabe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_5fe8dbb2d0691.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/80660838204.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393632/normal_602cead6b37ee.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/novederidamukikusevakufa.pdfIn PDF document text
    • http://jemulobapamiwu.mywebcommunity.org/11625458613.pdfIn PDF document text
    • http://sutarakikim.scienceontheweb.net/13148924850.pdfIn PDF document text
    • http://fodelogutejamit.getenjoyment.net/22287932506.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494451/normal_5fe2ceb2502a2.pdfIn PDF document text
    • http://terakusinuw.mypressonline.com/notavumijevajupuvovugovi.pdfIn PDF document text
    • http://graatorama.fun/43367039915owv25.pdfIn PDF document text
    • http://triple-doska1.club/dreamville_down_bad_videotodmj.pdfIn PDF document text
    • http://farozemirig.scienceontheweb.net/67820027854.pdfIn PDF document text
    • http://dizititakozazi.mywebcommunity.org/32052678687.pdfIn PDF document text
    • http://itanto.space/342426688041jf4l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://namakanexir.atwebpages.com/mowidoxidesusubikozo.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/79780428875.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/creative_cloud_application_helpx.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA31 4972 bytes
SHA-256: 8c06fb1590a4af3bb57628beb8c399bc9a0818652d6a36f7d9c5693e15205c55
font_01_sfnt_off0000eb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 1748 bytes
SHA-256: 37a3a951e0f3196744583439ea37fbaa8ddcf86155db07a6721a9458a0c3791f
font_02_sfnt_off0000f3a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A6 9872 bytes
SHA-256: 938f5a89075ed26b93bb261b8e8ae29a1de69df95fdbc7c57f8fe4ae86c66652
font_03_sfnt_off000115ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115BA 20264 bytes
SHA-256: 93f3c21989c24e96e6ebbd5e3ff4302f6e8616a3b25c0d70ddee1bbadd819975

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