Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e7d26589f0dc38…

MALICIOUS

PDF

87.8 KB Created: 2021-03-18 08:20:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 717ce0a979fb98efad248f2b93535af9 SHA-1: 2500734f0cd70c5d0fe24d5d766a43ed63a54e7d SHA-256: 76e7d26589f0dc3872f7f2bce50d7828853c5c4e20ef9c712b77037eba34af1c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to car sales, likely intended to trick the user into visiting the malicious URL. The presence of multiple embedded URLs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/123?utm_term=chevy+camaro+ss+manual+for+sale
    • http://reweder.site/how_long_to_learn_autocad_electricall9yly.pdf
    • https://cdn.sqhk.co/zikufivol/aBuhhgK/silukobunali.pdf
    • https://cdn.sqhk.co/wepenujofow/oEtgfaW/mini_golf_100_level_30.pdf
    • http://toteganutiv.66ghz.com/kevemururanen.pdf
    • http://xbet1.fun/davaxphy65.pdf
    • https://cdn.sqhk.co/wumigapinido/bidOhUF/stickman_empire_mod_apk.pdf
    • http://formulamoney.top/players_handbook_errata_202051jnq.pdf
    • https://cdn.sqhk.co/bisuligiga/adY2gd4/36943775001.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fojeloga.rf.gd/vewatizopenikotatup.pdf
    • https://uploads.strikinglycdn.com/files/410290c2-a6f5-4ebf-9e85-a85df60d9f1f/99968763157.pdf
    • https://s3.amazonaws.com/bejenosugede/54637108053.pdf
    • https://uploads.strikinglycdn.com/files/7cfafb6c-9be8-4718-b3d1-1b4de41c55ac/73448752548.pdf
    • https://s3.amazonaws.com/jidagafinuxesu/49388812757.pdf
    • https://s3.amazonaws.com/bugutaj/manual_de_policia_judicial_colombia.pdf
    • http://napilidowolaro.rf.gd/clia_proficiency_testing_guidelines.pdf
    • https://s3.amazonaws.com/tanikanaw/tamako.pdf
    • https://s3.amazonaws.com/mokuwanibof/vopovof.pdf
    • http://fefomuk.epizy.com/dinowokewoniwageked.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_off00011b54.bin
950a4dca0bf80952a4a74fb12668d6659ceae6b6a7fb51dac0e400dd26314a3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B54 5188 bytes
font_01_sfnt_off00012cda.bin
cb5f1da253548b9dc93610def3f5b087242fb22ba29676bf9b32d15edaef6278		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CDA 10912 bytes

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