Malicious PDF — malware analysis report

Static analysis result for SHA-256 abda8e00646387f0…

MALICIOUS

PDF

67.2 KB Created: 2021-02-11 21:42:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bb2917a99aa5f742a61d527c13cb541b SHA-1: d38f37ff387d5db203c2234952845109605ad51d SHA-256: abda8e00646387f0f51eaf179030ef0e0031a604334f35a45e6b1f1c7b5c76e0
96 Risk Score

Malware Insights

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

The PDF file contains a URL that masquerades as a download for a Pokemon game ROM, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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
  • 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://leonvi.ru/123?utm_term=pokemon+black+rom+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489601/normal_6018a0891e7e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389571/normal_6016c64822abe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482023/normal_5fcd89dfcf62c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381081/normal_5fe6e34be7e2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484093/normal_5fff2de738d14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485689/normal_5fc7d153cec9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402032/normal_5fd1d48ad4a11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/bingo_game_printable_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/24791389282.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/kikafa.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/akureyri_map.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD38 4768 bytes
SHA-256: 72830e9d848d2cce9966bde54bffc9652e2ad9485204629a7804347390d1e34f
font_01_sfnt_off0000cd38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD38 10408 bytes
SHA-256: ac88b6b57627f24478c850e3af285020346386b9425c1e83cfb52b74ab1612ba
font_02_sfnt_off0000f0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378