Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7b2f804918001b0…

MALICIOUS

PDF

69.3 KB Created: 2021-01-06 10:23:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 78acd7f1c05115ec48220eaed46306f6 SHA-1: 2dca4cba990886fad7659f67981a7d3acb0be210 SHA-256: e7b2f804918001b0719c5540ecfaf68cd2807cc301b59c4d167fbbb5075a6e10
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution chain. ClamAV detection and ML classification strongly indicate malicious intent. The presence of multiple embedded URLs suggests an attempt to redirect the user to malicious content, potentially a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/aws?utm_term=barsaat+video+songs PDF link annotation
    • https://cdn.sqhk.co/numokafas/jdjfibi/80442731309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426557/normal_5fa3c0bbe1a0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5fa6837c43783.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/ifeIpCk/vogutaruwumawado.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/RICcFhb/maze_runner_3_summary_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423757/normal_5fa59059c8acb.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/ijigheK/voice_changer_super_voice_effects_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386591/normal_5fcf3ec706811.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_5f9b29f79c1c1.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/sizabo/vijux.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/27508313280.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_off0000d2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F0 5072 bytes
SHA-256: c213cbc3ccab02ffffeac9c2b8934d43c8bc9b8276bd0f1f971db25748138df3
font_01_sfnt_off0000e447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE447 10792 bytes
SHA-256: 790d9f5c28c8da7088db98c591c99ed03745c8640553e769cbbb597957786233

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