Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b3410f56cac5b4…

MALICIOUS

PDF

82.6 KB Created: 2021-03-19 03:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8c23549b048b9dc4eb09305b077805b SHA-1: 7c98db235e162d4ac8e7142cd786ca2e0fc59c50 SHA-256: e3b3410f56cac5b407c72648b6ac0823776c0e216289047abdb5cef45e0766a4
96 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, with heuristics indicating the presence of external URIs. The document body, though heavily obfuscated, contains references to 'Cisco tv guide' and application metadata, suggesting a lure. The embedded URLs point to potentially malicious domains, likely serving phishing content or further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=cisco+tv+guide
    • https://cdn.sqhk.co/roretuduva/ZIjiFie/texelipanedige.pdf
    • http://apsdd54gfv.xyz/bianchi_bike_size_guidetivpu.pdf
    • http://affilateapp.online/43962070244qd6t2.pdf
    • https://nonegila.weebly.com/uploads/1/3/4/7/134702729/wivef.pdf
    • https://ginarelerojafu.weebly.com/uploads/1/3/2/8/132814261/talusimeket.pdf
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdf
    • https://sevezumu.weebly.com/uploads/1/3/2/7/132710575/4243989.pdf
    • https://tokatukunopiso.weebly.com/uploads/1/3/4/3/134352811/23440852b52316e.pdf
    • https://cdn.sqhk.co/raxedaninaso/cCjc6jc/weed_killer_safe_for_grass_and_plants.pdf
    • https://cdn.sqhk.co/gafisasiwu/hhO39gg/84008466760.pdf
    • http://fonudesuwobulud.mygamesonline.org/57110926561.pdf
    • https://cdn.sqhk.co/xukigipeduve/Digragj/buvexobejemiz.pdf
    • http://rozujed.sportsontheweb.net/canon_powershot_sx720_hs_troubleshooting.pdf
    • http://fsbsiod.com/povadofanisejupusawitohut71.pdf
    • http://barajofa.mywebcommunity.org/xubigobesojebanuxur.pdf
    • http://visionnew.xyz/treasurer_s_report_template_for_nonprofit_organizationmpo9k.pdf
    • https://cdn.sqhk.co/tajudozizif/g5NPhc2/xogizigitifufavatiwifokej.pdf
    • https://cdn.sqhk.co/fosigigamef/iIgcjii/77839687696.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kipazafar.atwebpages.com/what_does_van_mean_in_english.pdf
    • https://s3.amazonaws.com/fevobelijogal/wuxijajinebus.pdf
    • https://s3.amazonaws.com/vobuturinivi/fallout_new_vegas_steal_gun_runners_schematics.pdf
    • http://vujapoguxesak.myartsonline.com/11167417737.pdf
    • https://s3.amazonaws.com/tarajix/bunkie_test.pdf
    • https://s3.amazonaws.com/tometubufimopim/tiribamokejasawofu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f98c.bin
99f29985f399d5090629b79c40161e1dd00594614fef9f886cb99e0b81548b3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF98C 4628 bytes
font_01_sfnt_off00010963.bin
77d3db5ec6b273b7ab33365e8c71f751a7e2b90fb6c4935d4150ec68d949951f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10963 11304 bytes
font_02_sfnt_off00012fc6.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FC6 4324 bytes

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