Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae20f4279bc4548c…

MALICIOUS

PDF

70.2 KB Created: 2020-12-27 11:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 7285b30b90f9560cca73ddabceacdb01 SHA-1: 6d6a7a0721babd684df834da5922e2c03fbdb308 SHA-256: ae20f4279bc4548cda1a6dcf02cc0d2100d322458c6d66a6038b8cc79bd59418
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, appears to be related to a warranty, suggesting a social engineering lure.

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://traffnew.ru/aws?utm_term=formica+laminate+countertop+warranty PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401518/normal_5f9153c96a19f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375342/normal_5fd7806792a1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465277/normal_5fc9fbe89897c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455208/normal_5fdac6b485fda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449783/normal_5f9fdf0a62d2b.pdfIn PDF document text
    • https://xipejefokodidub.weebly.com/uploads/1/3/4/6/134612454/fijuwu-kutor-furemes-vemabekevalu.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/1121dd11-4f4d-4523-aec2-0f9d4ee3bb61/79467874196.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/basuga.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/51019695781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65467244-fbb5-41bf-9da3-7ef435f12549/mythologies_book.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/sizufanavekejepipimejemon.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/35679636632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31d384ef-39c9-4381-b38b-c20601f35739/bell_lapadula_model_cissp.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_off0000d630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD630 5052 bytes
SHA-256: f43ba1e9dcad10f389268059ca7626925ad6fabc8f766ff8329308d7b0506f0e
font_01_sfnt_off0000e763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE763 10676 bytes
SHA-256: a356c561c3cb572df285607737b046dd561d20f87a84c5dc00079cdf1f07d728