Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebaf62747e67c8e…

MALICIOUS

PDF

73.9 KB Created: 2021-01-23 21:59:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 701b0bff947bf65594c62c4e031b7878 SHA-1: edf20a4040a20ee8743d9a3e2af2543804c899a0 SHA-256: aebaf62747e67c8ea9ec69082b06229666c6d6aacf71b7d573856add7aedc5d8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to contain keywords related to the embedded URL, suggesting a lure to trick users into visiting the malicious site.

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://jottigo.ru/123?utm_term=toilet+seat+hinge+bolts+replacement PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471958/normal_5fcbfff9a25c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414494/normal_600741d638ae0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448337/normal_5ffd224a6f05e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417543/normal_5fd63c140f967.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409799/normal_5fe224ed791da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485705/normal_5fd6de53943f6.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/zabejuvijolu/2822098609.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/superdry_womens_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/gikaw.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/kuxirizubibemib.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/coast_guard_blue_jacket_manual_online.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/bafuxijoguwilekusedula.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/refubulafibexupoguluji.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/gilobojavosubigod.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/75710392196.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/71307905307.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_off0000e31c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31C 5436 bytes
SHA-256: bd7d9eee96430790cb5cbcafd5c6236336862d7957e620f9b5abe46949d86ad2
font_01_sfnt_off0000f56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56D 10896 bytes
SHA-256: beb2eadf0621b3ed3530c5e6a68518bce6c7ddb87dd6c86c0979a704a6ec4a9d

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