Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5270ac0c79e1690…

MALICIOUS

PDF

74.2 KB Created: 2020-12-26 17:19:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: fa2e483c53d9622918844f39acb634d0 SHA-1: d1df2284e5a415b2b1200590fd79cec45f3e4142 SHA-256: c5270ac0c79e1690be3559a5fd2ce17775c0d721832f64256ac99505b6a8fe1b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest an attempt to redirect the user to a malicious site, potentially for further exploitation.

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
  • 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://trafffe.ru/aws?utm_term=lab+equipment+worksheet+chemfiesta PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f86fc5c911cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381081/normal_5f92a4d672da5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5fd0bad8124cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452593/normal_5faf130ea10a9.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/wozowuledij/wliia_hoedown_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/nirejolomagujenuwitan.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/fixing_sheetrock_seams.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/jigabezuroxigidoxobev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d450603-b860-4f0c-9946-20e6c180b71c/60135054031.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/penelemejenoxad.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/download_tweakbox_app.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/cancionero_catolico.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/skyrim_dragon_rising_quest_won_t_start.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ebbe241-209d-4b53-8d98-4157633783f4/73485200939.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_off0000e46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46B 5588 bytes
SHA-256: f83e3160955e869c5de2bd2ae37e6da6ac1e2b13b693f35a0a343d88fb431226
font_01_sfnt_off0000f761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF761 10612 bytes
SHA-256: eecb40b67ff1cc2912b5d95c245ed2f864165d82eb73eb8fe0e0f04a8e673be0

Open this report in the interactive analyzer, or submit your own file for analysis.