Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07cbee5cbbb0c09…

MALICIOUS

PDF

69.0 KB Created: 2020-12-21 13:21:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5d945da2322568a19e8def2081eec133 SHA-1: 8df450471d39237f410e10b9425d200ed12bd90d SHA-256: b07cbee5cbbb0c09145de9c6a039443d6ecfabcc8037e961389ae18e7f5e3b17
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'ggtraff.ru'. ML classification and ClamAV also flagged this PDF as malicious. The embedded URL is likely intended to lure users into downloading malware or visiting a phishing page, aligning with the 'Spearphishing Attachment' technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ggtraff.ru/strik?utm_term=backflip+madness+demo+mod+apk In 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/viregujipowuru/lucky_patcher_apk_download_for_xbox.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b1f5a3ccef3526ed10f8/t/5fd6d77cffab5d3c560bd71a/1607915389115/zimsec_a_level_physics_syllabus_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27b9b88c99b6d37b1408e/t/5fd22e509a9e5443ac84ac4e/1607609936319/nubs_adventure_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38251cec-f5a4-4f14-bc8c-6c5837b59442/2_pints_into_quarts.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/midolezelobulisixofaxug.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/30028780191.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/down_syndrome_monitoring_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37174b4b-5f63-4050-8812-b7f6fcaf4c5f/vadexezitufidegiliseb.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/12269835492.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/dazolexipasep.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceffcb7ee8e70759d1dc4/1606217725523/54167054157.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/gosuritesi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A7 2960 bytes
SHA-256: ba9dd86ad06677ef82b9fc66565cbe1db364e5caa8fb73f24ce3e10b7ab9a08b
font_01_sfnt_off0000c32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC32A 5028 bytes
SHA-256: 87e8e5c7547aeb8cea4ee22f75b4060d6e82a1039a521cc3ba3bd9b258a8c02e
font_02_sfnt_off0000d426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD426 10636 bytes
SHA-256: 04488dbbe1c412070fe875b07612a98ecdfaf0fba165eeb916289676363fe012
font_03_sfnt_off0000f8b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B0 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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