Malicious PDF — malware analysis report

Static analysis result for SHA-256 93055ced9249343d…

MALICIOUS

PDF

71.0 KB Created: 2020-12-17 20:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17e34e651cc55bd67ebe87569ad77ae4 SHA-1: d931ee2bcfc6fcadf2ffa6e718842fd3a349157e SHA-256: 93055ced9249343dcb791f63d0b8d3161bfa51a1c55d1ad0722a7473748c0f4e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious URL, which is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to 'family therapy approaches'. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly indicates an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/strik?utm_term=family+therapy+approaches+pdf
    • https://cdn-cms.f-static.net/uploads/4369520/normal_5fda5e32475cd.pdf
    • https://dalagusixofu.weebly.com/uploads/1/3/4/8/134853238/6466db1a3eeda.pdf
    • https://wasafigazepez.weebly.com/uploads/1/3/4/5/134586721/7121142.pdf
    • https://fijapirugonobi.weebly.com/uploads/1/3/4/3/134315317/kuvuzejegavu_kixapiziz_ziseri_jusaninokemod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/fapaga/boluzusiwajojowogizal.pdf
    • https://uploads.strikinglycdn.com/files/f376a6e3-d14d-4d64-9d93-246881775b09/descargar_el_agua_champeta_mp3_conve.pdf
    • https://static1.squarespace.com/static/5fc154f8d26ff1194f76aa17/t/5fc8ef0c71db9d554d4d9dbe/1607003916297/getting_nails_done_while_pregnant_safe.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceedc29c5e26690248096/1606217439066/32385611432.pdf
    • https://s3.amazonaws.com/wuniku/rujub.pdf
    • https://s3.amazonaws.com/baxadelefofibuz/daponasopatamikovisobufu.pdf
    • https://uploads.strikinglycdn.com/files/2c106443-38ba-430e-a549-fb0de263baa6/porukanunuwewiwizamutu.pdf
    • https://s3.amazonaws.com/zuxadol/lactogenesis_humana.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_off0000cb41.bin
1cc59b7d13c724476db8a7b0bd660aaf17179651b5c5ac934e51f0c1180be9ab
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB41 5136 bytes
font_01_sfnt_off0000dcbb.bin
50424b7944f47a1a82b2685ee7e7e7fa5b0396b8fddb521c8e36b5a747e8867a
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBB 10820 bytes
font_02_sfnt_off00010164.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10164 4324 bytes