Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a075ed9b62483c…

MALICIOUS

PDF

74.8 KB Created: 2021-01-02 10:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 2958f824dd85d43ae5ddc496bb66991f SHA-1: 96ede53688f653033d066f78eef803631c75e303 SHA-256: f0a075ed9b62483cc824df7908598b5a5349a53bdf2ecd8fdd650923fe2c46a1
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links to known malicious redirector infrastructure, specifically 'https://gettraff.ru/123?utm_term=toyota+yaris+2007+engine+diagram'. The document body, though heavily obfuscated, suggests a lure related to a 'Toyota yaris 2007 engine diagram'. Heuristics indicate this is a malicious redirector and part of a link farm, likely intended to distribute further malware or phish for credentials.

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.
  • 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.
  • 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://gettraff.ru/123?utm_term=toyota+yaris+2007+engine+diagram In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403418/normal_5fb2d1c6699b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403951/normal_5fcdaaa453510.pdfIn PDF document text
    • https://sotokogel.weebly.com/uploads/1/3/4/2/134266154/9145294.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/zurovajij/memizezof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a373e10b-fe60-4a6f-9f8c-efe0384704f4/asce_code_21.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/51732752907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1b3cfbb-48ab-47d7-b80c-621357242722/xubowulokukomamoludewawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac6a91c5-7f45-41d0-84f7-d2d011305d5d/43416535071.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfec7a79-e3cd-493c-980b-c4196aaa08eb/72653118278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a440252-c2de-45e6-9ae8-114e4d8fc0cb/lifojine.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_off0000e819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE819 5520 bytes
SHA-256: 5b843d8fac87cc788ce4309d06b8ca80425ef0ff7bc9023922aef9e8cb77afb9
font_01_sfnt_off0000fad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD4 10400 bytes
SHA-256: ce5e323f296b5482156e0b260b9f3448b831b3dabfb3cd4687b85a3122af8cff

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