Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd1718bbff6ba92a…

MALICIOUS

PDF

65.6 KB Created: 2020-11-20 10:31:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8f341337d89a652336c5907b5701bfaf SHA-1: 1cb1974a919604c7878514fde421fc917f3806d3 SHA-256: fd1718bbff6ba92aae9198474d5ffb205dc793cdc85d0d06d5ebe5db1b38bbf8
162 Risk Score

Malware Insights

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

The PDF contains a link to 'traffine.ru' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'World of Warcraft Chronicle Volume 1 PDF free download', suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a phishing payload or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/123?utm_term=world+of+warcraft+chronicle+volume+1+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4449004/normal_5fa2570aeb415.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5fb4a46b3c214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_5f976fb7cc15c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f8a8509c63fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390660/normal_5f9174a2900f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5f8b3fd8a7f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417123/normal_5f95db9b7c960.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/muvevanepen/27977522616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6b6cd98-b330-4cf5-ad4f-4c5f69529169/33077589933.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/japan_itinerary_sample_format.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/tisoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a63aa9e-e13f-421a-b6a7-9ec2c24f7640/pamupa.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/pentax_kp_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2148981b-b3f5-41aa-8af5-eef811718402/85201359210.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/50403070651.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_off0000c204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC204 5436 bytes
SHA-256: b317a2a4d89a1aeebc0635e2606d7d7793d88db914654d6c14d73346514b35e7
font_01_sfnt_off0000d479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD479 10712 bytes
SHA-256: be80bc923866b546bce853ddc2cb4afa37d821a67f3c17a125fdd5df186f4b1c

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