Malicious PDF — malware analysis report

Static analysis result for SHA-256 219f23bfc7a2bccc…

MALICIOUS

PDF

86.3 KB Created: 2021-04-06 20:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4c273b0b157ffcd16cb4b1db6bf794a SHA-1: 9dc0d25a9666124883e022e83c84036dbec4c9e9 SHA-256: 219f23bfc7a2bccc6d2b384260f5bf21c6a35d2e1c72adb4eb5fdec796103815
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though partially corrupted, suggests a lure related to a 'Gold's gym xrs 50 home gym manual'. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://nipisod.ru/strik?utm_term=gold%2527s+gym+xrs+50+home+gym+manual
    • https://cdn.sqhk.co/xufaribo/Hvkxjh1/momifurerupaxeruviwa.pdf
    • https://cdn-cms.f-static.net/uploads/4366949/normal_6064e2dc547b4.pdf
    • http://motorutovibipe.sportsontheweb.net/what_are_the_characteristics_of_naturalism_in_literature.pdf
    • http://boost-shop.xyz/how_to_scan_multiple_pages_on_hp_deskjet_2542j3aig.pdf
    • http://bajelow.iblogger.org/25411620774.pdf
    • http://rezotu.xyz/69163881446ypcg7.pdf
    • http://idealslim-italiaoficial.site/33761423697n4hhb.pdf
    • https://cdn-cms.f-static.net/uploads/4465274/normal_604bbc4b60ada.pdf
    • https://cdn-cms.f-static.net/uploads/4417129/normal_5fd8818c3353e.pdf
    • https://cdn-cms.f-static.net/uploads/4456377/normal_6016e5adb645c.pdf
    • https://cdn.sqhk.co/gejupajo/hhThfm9/39180835508.pdf
    • http://gakarefutejet.iblogger.org/royal_ceramics_lanka_plc_annual_report_2016.pdf
    • https://static.s123-cdn-static.com/uploads/4409840/normal_6007603da45c9.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • http://zhigina.ru/civil_service_equivalent_military_rank_in_bangladeshqn895.pdf
    • https://cdn.sqhk.co/nozedimasav/heggih3/rexejepi.pdf
    • http://posurazatux.mypressonline.com/nomugeteliruguwekaler.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://bagugexasorip.myartsonline.com/muwegasarikinitirined.pdf
    • http://dakisexojir.rf.gd/hp_probook_6470b_battery_not_detected.pdf
    • https://e0271a52-a7af-48e9-8a99-924ce320ec62.filesusr.com/ugd/be5703_3b6dfcc5713f4d61bc35e95a171ef77b.pdf?index=true
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_e226574065de44838700f757791e8675.pdf?index=true
    • http://zodiripek.myartsonline.com/benipu.pdf
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_bc2318e63d4743febebdff4f9df679f2.pdf?index=true
    • http://jaziwovapotulit.epizy.com/job_interview_question_and_answer_in_english.pdf
    • http://juduboferota.epizy.com/rijufali.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_off00010223.bin
9293077634575aa95de708b17b0fed7800ab0234e0b08f0c9a67ea2d780529dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10223 5496 bytes
font_01_sfnt_off000114ba.bin
a0f0b014d8f2d732ea83c9fb0882c2561bf3206fc7862aeea3661f33a498f4a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114BA 12076 bytes
font_02_sfnt_off00013d5d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D5D 4324 bytes

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