Malicious PDF — malware analysis report

Static analysis result for SHA-256 d05437100e79d6ca…

MALICIOUS

PDF

70.9 KB Created: 2021-03-06 16:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1133893ebf09cfac40d55c2bc076822d SHA-1: ea94ded1889d6b4e206254b0f5c6cf42cc7a09b6 SHA-256: d05437100e79d6caa1e15d84729f9070fad531796d7310ec49959648e1a0958c
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous links to disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The document body, though heavily obfuscated, contains text related to 'Sports Illustrated', suggesting a lure to attract user clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/123?utm_term=who+is+on+the+current+cover+of+sports+illustrated
    • http://blue-tick-central.com/zumelawewopekezudadujie27w5.pdf
    • http://teagreen.space/jefebotuk80muo.pdf
    • http://soluzixod.66ghz.com/683_pares_biomagneticos.pdf
    • http://profaudit32.ru/how_much_does_drivers_license_renewal_cost_in_mississippieeuwy.pdf
    • http://new-leggins.site/571602762737xout.pdf
    • http://creamwalls.space/gejugadinonej7eiw6.pdf
    • http://my-favshopd.online/is_the_canon_rebel_t5i_good_for_video1uqd4.pdf
    • http://parkingtest.xyz/inochi_no_kioku_piano_sheet_musicyje1z.pdf
    • https://mitafewojoruwe.weebly.com/uploads/1/3/1/3/131381680/5822883.pdf
    • https://xoxomedeze.weebly.com/uploads/1/3/5/3/135308121/sedefujusexif.pdf
    • https://pekavodasusoku.weebly.com/uploads/1/3/5/9/135982803/kagujofoxetovofugafe.pdf
    • http://songkfrk.site/59534979983sgfkf.pdf
    • http://momentikshop.space/776730724sw1w3.pdf
    • http://moscow-siberian-force.online/kepifodogadoofbi6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_0abd9db556e04b46b58de98db4944cd4.pdf?index=true
    • http://buxazub.epizy.com/texas_child_support_direct_deposit_form.pdf
    • https://uploads.strikinglycdn.com/files/4fef07fc-7982-4313-8219-030468c01acf/voluz.pdf
    • http://wobemiko.epizy.com/43696427343.pdf
    • https://f98f40d2-b649-4e6b-99af-b89bbf2331ff.filesusr.com/ugd/724bd4_668cb4e1174a46b79cde18d9c47528b3.pdf?index=true
    • http://lovikusikew.epizy.com/bus_stop_marathi_movie_khatrimaza.pdf
    • https://74269c25-1731-4359-90d4-804f54ef9c1c.filesusr.com/ugd/b5973a_1bec6d2a40df4979b12f35c4d9ed84e6.pdf?index=true
    • http://xopapodi.rf.gd/kuven.pdf
    • https://uploads.strikinglycdn.com/files/9b251170-1a01-4eb5-b6f2-2a4fb5e8c602/kibufebev.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d953.bin
9ac09d6f1084e0b85d6b4ec333240b1bff0429b868eb88a399cb1d21620aa270		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD953 5316 bytes
font_01_sfnt_off0000eb75.bin
5e8503d508f42b6cc0ce41ee28c7247d2d553037baa06eff8bebc9a77a9e738a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB75 10200 bytes

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