Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b395a664aff91ec…

MALICIOUS

PDF

83.7 KB Created: 2021-03-11 14:21:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 307dc9c20fea29623ab8b7fce06e4ce1 SHA-1: 6650148ad14767755e3fb16b90d7266984dc67ff SHA-256: 0b395a664aff91ec188a01054348b1ea315f6f06d99fff844748f8f0551db138
134 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting. The document body, though heavily obfuscated, contains keywords related to pricing and potentially lures, aligning with a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/wix?keyword=black+blood+python+price PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460457/normal_5fec78a56fe6c.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/68859306377.pdfIn PDF document text
    • http://boost-store.net/first_air_hockey_tournament_2020tfrwn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489732/normal_603432bb42def.pdfIn PDF document text
    • http://lunesygets.xyz/how_to_describe_the_organizational_culture_of_a_companyeyagy.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/makebabifugirejusudatuzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461748/normal_602af419b254c.pdfIn PDF document text
    • http://tesar-krd.ru/application_catalogue_templatesra7r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393499/normal_6019c9adb9d00.pdfIn PDF document text
    • http://cmb-eco.com/41170536588gzu78.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/42f2e695-0c60-4ef6-af1a-7727b974dd4f/11244927483.pdfIn PDF document text
    • http://vemewef.rf.gd/template_analise_swot_ppt.pdfIn PDF document text
    • http://tuvawewopuje.rf.gd/relal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bff1c6a6-d2a7-45f7-a9a9-c43664e28f8c/how_to_read_ct_perfusion_scan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56baab31-ce0d-4f0c-81c1-a48078a41d86/conceptos_generales_de_seguridad_industrial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d80656-5154-4b41-8f3d-21d9a3ad0b77/245145370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad3a986e-2058-442e-8e5b-0a1ef40b5867/kakepovogijigegoluwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/510c5543-380f-480b-a2bf-813ad6b704c2/olympus_om2n_light_meter.pdfIn PDF document text
    • http://pivekukevojadu.epizy.com/sigolojixe.pdfIn PDF document text
    • http://rasunafosav.epizy.com/xetupururejozebedujutivu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFC 5128 bytes
SHA-256: 8b8a12ec13c24803fcd31f9268447d850565fb374237e318bb97ead00d28aa00
font_01_sfnt_off00010d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D51 11060 bytes
SHA-256: 15b823c72b9535756a742af0da55420b9cf39c9be05345fffc79777f9a07c9e6
font_02_sfnt_off00013300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13300 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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