Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd160fbf4eba68c…

MALICIOUS

PDF

75.0 KB Created: 2021-02-17 12:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: b1b2f84668d54881a6ca17d98e14467c SHA-1: 2cb36aec05fb7915b6071a226e49b323c68f13bc SHA-256: abd160fbf4eba68cdce2c14bd7834e7331d8c95426643bdbf72bf5c021c566e8
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical finding for a malicious redirector link. The embedded URL `https://crophysi.ru/strik?utm_term=quick+and+easy+vegetarian+indian+food+recipes` is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest an attempt to lure the user to a compromised site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/strik?utm_term=quick+and+easy+vegetarian+indian+food+recipes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406812/normal_5fdb9c5615762.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417413/normal_60072ce424cf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474734/normal_600ce523b4c1e.pdfIn PDF document text
    • https://cdn.sqhk.co/punenekebi/ihem34Z/dollify_online_create.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_6015640965584.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/fizup/10028360640.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/84838944494.pdfIn PDF document text
    • http://pivujumurabaf.epizy.com/6605321161.pdfIn PDF document text
    • http://tiwemevi.rf.gd/sokadudimopetena.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/62471480226.pdfIn PDF document text
    • http://fugusun.epizy.com/48653986201.pdfIn PDF document text
    • http://pajogapusifured.rf.gd/animal_kingdom_season_5_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/xokuzetur.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/ellipsis_worksheet_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/calculus_limits_worksheet_doc.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_off0000e6a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A8 5576 bytes
SHA-256: 2f0e2303ffcf684774e0d46799dfc0f8edfe2e4705aa1a8dc8598a4c356ab445
font_01_sfnt_off0000f9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CD 10872 bytes
SHA-256: 9abc9918abefb7f000cfa6a64f321afb072ce89613521d7e1f6ca12de57659d7

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