Malicious PDF — malware analysis report

Static analysis result for SHA-256 5afbbd96ca0e8b1d…

MALICIOUS

PDF

63.9 KB Created: 2020-11-29 05:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 842ccebc55746d024d9a0924b198fa4f SHA-1: 88c18b577bfd60ac3238d5995e2c068cc55fd7fb SHA-256: 5afbbd96ca0e8b1d6270f009676a4a95a213b6c8e7225450a5d562c2ed37fd9f
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1190 Exploit Public-Facing Application

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an MFA/2FA-themed lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://traffset.ru/123?utm_term=pennsylvania+food+stamp+card+number PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383165/normal_5f8d1b47d023e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390659/normal_5fad3355d41de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368982/normal_5f9527298e6b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421960/normal_5f9b287340bef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5f9a9cb74ac13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466367/normal_5fc07be841da6.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/49d50586-ba3d-43fe-85c2-9def1dedd75c/fitib.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/78812881056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/925c17b3-79e7-4fb8-83ab-8e0fba91b95c/17125994833.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/mp4_adella_full_album_terbaru_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/rutuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/42935948243.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_off0000be8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE8A 5604 bytes
SHA-256: 5927f4d7f4a01c66bfa1c45f5df81c8424e246bf0c950912a4878fbdb27fb166
font_01_sfnt_off0000d18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD18B 9772 bytes
SHA-256: 8fdab766190855fd5d9140e55d6631fddfea9df5fec6066b4c86c31ccc6c7f69