Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1852372e37a6610…

MALICIOUS

PDF

61.6 KB Created: 2020-12-02 19:54:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 92580f195681e0eb3ee9921044e13d11 SHA-1: eef815c6bf8bda94cbceea0359fbc9224cc9c2a7 SHA-256: b1852372e37a66102ac992080b1d710b0f96ce87396b60d487cf06d18d89aac6
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/aws?utm_term=cable+ladder+accessories+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370528/normal_5f91c811c3a1f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/822c5a65-eed0-4363-bb04-f88634cbc63b/dyson_ball_multi_floor_canister_vacuum_-_bagless_-_hepa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4b01145a8629dca72e26/1606372097937/out_out_robert_frost_macbeth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fd0cb1c-fb98-48c2-bd5e-3878e19aa923/wisoxazepirujinawijino.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/big_10_tires.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f1b0084698658e5e73ac/t/5fc23bdb5147b148047cc49e/1606564828095/pavesavalotezuxixutob.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1fb4e7fdc9583a9b1b30/1606229941108/zapazubuvasaxomaduseviwo.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/rusilabageg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1891e06-8c7e-4987-ac08-3ac1cba792c8/tipoloji_nedir_mimarlk.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/dibujo_de_planos_arquitectonicos.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aa09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA09 4912 bytes
SHA-256: d293c85c7f8f20d985be403e45819b2a24ac8e452c12d5e508a0fe50441945d1
font_01_sfnt_off0000bac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAC0 9740 bytes
SHA-256: 20af496d60dd2bd8434d17ba5e90938c32b940f7dc8c69244d9af69a9eae0457
font_02_sfnt_off0000dc03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC03 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378