Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd4f1ad508f0361…

MALICIOUS

PDF

65.4 KB Created: 2020-11-26 21:55:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 116ae91c6a8e5785a0ecfac840c88f6f SHA-1: 190ddb0ac69732123de99b9423589e3faa263a58 SHA-256: 7cd4f1ad508f0361ad09c0b46170e91d135c58bf6eed04d4fbf329126e4c70d4
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, traffmen.ru, which is disguised with text related to the 'Stevens Point Police Department'. This suggests a phishing attempt to lure users to malicious infrastructure. The ML classifier and ClamAV detection further support the malicious nature of this PDF.

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://traffmen.ru/strik?utm_term=stevens+point+police+department+non+emergency In PDF document text
    • https://cdn-cms.f-static.net/uploads/4451750/normal_5fab0886031d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f8c857460017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403119/normal_5f96b794488dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415770/normal_5fae10c3157fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495251/normal_5fad79b413bf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490269/normal_5faf3afede8d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481163/normal_5fa812993a5e2.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/zubuwujoxom/kovevasejalifirokutij.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/risk_analysis_template_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/toketor.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/morav.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/list_of_likes_and_dislikes_for_a_person.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/guided_meditation_for_reiki_attunement.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_off0000c3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C2 5656 bytes
SHA-256: 20de64cf50c48d20dfed951a25469d604d6c744199cf129520dc07130cda306d
font_01_sfnt_off0000d6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FD 10132 bytes
SHA-256: e24610200d5d01251b7f0751644f331b5118a48f49f02ed10c89104acc1bfb68

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