Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8d34d17bc4db2f…

MALICIOUS

PDF

78.9 KB Created: 2020-12-31 14:56:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 765cebf5cf7ddcefecc8d205a822082e SHA-1: d70bf691eb37a02fcffdddd9c2f7b0d90a479bfb SHA-256: 0d8d34d17bc4db2f8451c691f73b3db8f65e8fc736fbb6aa05480624f9971945
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is likely intended to deliver a malicious payload. The document body, though heavily obfuscated, contains text that suggests a lure for downloading content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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=go+down+moses+william+faulkner+pdf+download In PDF document text
    • https://cdn.sqhk.co/rawegili/jjVigha/diy_ideas_for_kids.pdfIn PDF document text
    • https://puzagejezazi.weebly.com/uploads/1/3/4/4/134465952/260532.pdfIn PDF document text
    • https://tonulolini.weebly.com/uploads/1/3/4/3/134341491/sewewaxepax_tizawogamu.pdfIn PDF document text
    • https://jotukodapoze.weebly.com/uploads/1/3/4/6/134632246/99af0.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/djjgiXb/gedisunalirepeweguwew.pdfIn PDF document text
    • https://povemiloten.weebly.com/uploads/1/3/4/6/134608376/netuzukasixopap-kurazuvufava.pdfIn PDF document text
    • https://cdn.sqhk.co/wiberini/kEpibgh/dialectical_materialism_book.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/gozifep/65088130627.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/74661264512.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/44626324997.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/pen_writing_font.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_off0000f80c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80C 5376 bytes
SHA-256: 128b24a8d0a316c433c394fdac762ef331b81db7750f79a0ffcf7a2d4e4df812
font_01_sfnt_off00010a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5A 10684 bytes
SHA-256: ab2ac3c727cccd77d2917c59018effce07fd776bc24ec98002c146cf5e2339fa

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