Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd594455738a0b04…

MALICIOUS

PDF

66.8 KB Created: 2020-11-29 23:26:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8bd41ffc35fba0380fb286bdc537557c SHA-1: 2683ed8dd1d191acc893aa4d76465aa748967225 SHA-256: dd594455738a0b046f887eea2c57d44119ad78c54a0d726c3039fe78d4aae5f7
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/123?utm_term=icl2-+lewis+structure+molecular+geometry'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of PDF redirects often involves embedded JavaScript to trigger the redirection.

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://cctraff.ru/123?utm_term=icl2-+lewis+structure+molecular+geometry In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378149/normal_5f8f334caa9de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426813/normal_5fa899efb0f21.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/pazifetanegapu/fafogadutitawimogate.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/fluidmaster_model_300_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/58336304965.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/foreshadowing_practice_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/kawikitomifovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04c93c74-f222-4dc5-b7b6-550d55ab1ae9/gems_of_war_classes.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/realidades_2_capitulo_1a-2_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd7f2fab-b529-40fe-9140-d6251bc82fd3/franz_kafka_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/kotor_1_and_2_mod_builds.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/vumisetoditibipeke.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A6 5412 bytes
SHA-256: c9e18feab65335d725c7ce8f8a22e6142012ea55ac18efbb8af82db8cc46ec17
font_01_sfnt_off0000d61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61C 11248 bytes
SHA-256: 0cc3c6ea728403e2fabc8b649c85e5790d4fb0a0f667fcd53cde5b98a980957f

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