Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa9c3224a670ad2a…

MALICIOUS

PDF

66.2 KB Created: 2020-11-21 03:54:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9acb2559927c723f43aba7b6535ab4be SHA-1: 6a7ac274d52169dbc2ec6074841dcd1c875ebd51 SHA-256: aa9c3224a670ad2a3a77b3df76a614a58df3fd158b165ea3b2f5c6f555a14bca
154 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 routes users through malicious redirector infrastructure. 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=salesmanship+merit+badge+slides In PDF document text
    • https://xopavomubikun.weebly.com/uploads/1/3/4/8/134879687/rifowizafuj.pdfIn PDF document text
    • https://tusefekojeseto.weebly.com/uploads/1/3/4/4/134437698/soxekurolofi_pedonuxalike_lupagezodokoni_xotojel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425511/normal_5f9d151fcd44a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405903/normal_5f9d620086da7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4b23344-19a8-450a-bbcd-08cfa94a7d20/37181441046.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/vawaneluvudipakoniz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd998d8c-be07-4029-ac76-d38c04b6eb70/xilarerixokusumopimosin.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/sapezidari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c5424a8-84db-4535-af7c-5bc6b9a90cc7/5650941184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a824c24-eb23-4286-84b7-9fdeca2c2fd3/75800000869.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/calendar_2018_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195245fe-29b5-42ae-9165-e4d3641a198a/58226148527.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC474 5616 bytes
SHA-256: c11eb525873b820e54e3fc33358fd91ffe6fd0aa56466c89f8eaa7afc0b8ec35
font_01_sfnt_off0000d751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD751 10832 bytes
SHA-256: 11a239abe64779b24c24756cf92524295e3f678ebad72b7a67503beb60f174f6