Malicious PDF — malware analysis report

Static analysis result for SHA-256 097bd208df49b06f…

MALICIOUS

PDF

64.2 KB Created: 2020-12-16 05:59:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 09de55936390cce93624914c2baf77f7 SHA-1: 29df4b8501c0558112462582e39206f7df75be7a SHA-256: 097bd208df49b06f679aa22726c09a5a39e7612752e65de38bb3147a7ef9a83f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The document contains a large number of external links, suggesting it functions as a link farm to redirect users to potentially harmful websites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this conclusion.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffset.ru/123?utm_term=british+airways+baggage+fees+us PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4406777/normal_5fcefe86154c0.pdfIn PDF document text
    • https://rezivunafotete.weebly.com/uploads/1/3/4/3/134354631/dofiluwadofavet-mupiwepabok-mezer-nesowawe.pdfIn PDF document text
    • https://kimiligemapi.weebly.com/uploads/1/3/4/3/134343210/3097163.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401994/normal_5fa23521f0cda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405414/normal_5fd957fb6804a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470533/normal_5fd6e401c3b13.pdfIn PDF document text
    • https://welarozukakiwa.weebly.com/uploads/1/3/4/4/134497755/wobasavugofigu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422377/normal_5fbf020e8cd33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454432/normal_5faa1f62b24b3.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/21f7e708-31ee-4e90-a303-ee49843af3fc/tipigelalavejewuxaveporar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f61d35e-97ef-4d12-9196-0b32e4cce703/dojonak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9be0f346-3514-4fc0-853d-b2911972e437/jopuxabomipelow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/836296b5-d7cf-4a7c-887a-2e8c4582a6d0/springtime_for_blossom_comic.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_off0000c060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC060 5380 bytes
SHA-256: e2a59adc080eee203502cd6a2a54199b77dada33d4cd371bc76523f39040b2b2
font_01_sfnt_off0000d2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C6 9816 bytes
SHA-256: b62c4d7c5f6aea5b56514afc8da6392e20b3c9a7ee2a2ce831f5eb3d51b1a80d

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