Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2606b33d8e12df3…

MALICIOUS

PDF

72.2 KB Created: 2021-03-01 03:42:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 39066026e0e585cc2da53c8d6d74aa07 SHA-1: 0eb139af326f9c517d0d2c4ff78233cc2791ebda SHA-256: f2606b33d8e12df3bbf264631de27838db8656d253a7921d43b75f6e4c2d9c0c
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 0.9998

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://baarspo.ru/123?utm_term=12+step+workbook+in+spanish PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377408/normal_603a5caf0c012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480414/normal_6011536f44821.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420459/normal_5fe95b29a15d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381547/normal_5ff1d08cf2740.pdfIn PDF document text
    • https://cdn.sqhk.co/zofonabiz/9Njf6ge/45908092871.pdfIn PDF document text
    • https://cdn.sqhk.co/posiraki/idjjhjf/nokia_withings_watch_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365619/normal_60028547c7028.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/2FRihhi/76295500681.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/vascular_malformation_surgery.pdfIn PDF document text
    • http://vitupofelomar.epizy.com/wopesugovesejufegix.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/huawei_mate_20_lite_android_9_gncelleme.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/android_phones_on_jumia_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/idle_heroes_celestial_island_guide_reddit.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9EE 5260 bytes
SHA-256: b7010ab412ddbde919de03361f8458ac98c2eb8df390d2b70054499ee1c6fdf0
font_01_sfnt_off0000dbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDF 10492 bytes
SHA-256: 79bcfb87418939be263e8ad0f7b47e9d8aa7eb41e9e7f6dda5e119ec8a8f88de
font_02_sfnt_off0000feac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAC 16164 bytes
SHA-256: 3afbc95f4a2677bf4c8b77bd7df62e4dbeb651db4b5e482cf97b58e472170d58