Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d093c85956bd8fc…

MALICIOUS

PDF

70.9 KB Created: 2020-12-10 11:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 5d72219e6431b838b6ed1fe8f1047c50 SHA-1: 7c169cc563e9422fb022ef286391f5f574c52736 SHA-256: 8d093c85956bd8fc7584ffd8b886cdfd7c80e51016d41f760175220469a80f6b
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically indicating a phishing or credential harvesting lure. The embedded link `https://ggtraff.ru/aws?utm_term=compressed+gas+safety+data+sheet` is associated with known malicious redirector infrastructure, further supporting the phishing intent. The document's structure and heuristics suggest it is designed to trick users into providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://ggtraff.ru/aws?utm_term=compressed+gas+safety+data+sheet In PDF document text
    • https://todijaxazifaro.weebly.com/uploads/1/3/4/3/134342800/dumubokavobaz.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/lixiwijepavo.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/1625dd1c-52cf-4050-a39a-40eb94b6e015/muwipomazu.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/98547487365.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28802bda9c57a97c88755/t/5fcacd7ba51c5a14019bc7bd/1607126395430/86274165750.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/nizipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df8eac79-8bbf-449f-bcec-c6064eedbc39/18146498008.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf505df3de5e49b55ad7cb/1606373469922/koxerudixir.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/77615412450.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1758ebe9b6939510ebb53/t/5fc89a88b74dd54858dcee30/1606982281176/matezafiva.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/78431236787.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/troy_bilt_2700_pressure_washer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/retiwomotikedidokexoz.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_off0000d98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98E 5428 bytes
SHA-256: c3e0652a17d876a5620c94dde416891a16f0f5a6a27a2ee67a40e4f41c44a149
font_01_sfnt_off0000ebde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDE 10224 bytes
SHA-256: aa964c0151d03c85042a065ff4b587c8f02ea4a0d6024cf534d917bf17bdd09a

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