Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d678a066c65409…

MALICIOUS

PDF

80.3 KB Created: 2020-11-23 23:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 825c22c2f91b39ef01aaa2b142e47823 SHA-1: df23de46c34970e43f13a32056a9e10939c588e2 SHA-256: 96d678a066c65409592d6e6086fb30ff159705b51d9820bef7ca3cf93d778af2
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 link to a known malicious redirector, indicating a phishing attempt disguised as an owner's manual. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gettraff.ru/strik?utm_term=bear+outbreak+owners+manual In PDF document text
    • https://fobewesepujub.weebly.com/uploads/1/3/2/3/132303403/bejurekotosuliruxeno.pdfIn PDF document text
    • https://koradafad.weebly.com/uploads/1/3/4/6/134617683/9526096.pdfIn PDF document text
    • https://zubosevofugojat.weebly.com/uploads/1/3/4/3/134307347/wovofetaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371509/normal_5f8db102da4bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5fabf0d9cad15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469105/normal_5fb88cec8804b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368468/normal_5f8787c421979.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/vuxapawebulajusoze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b33be91-bed9-4438-8a5a-4372248c5273/biological_science_7th_edition_freeman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84fdc8b0-d228-4097-af05-c3b2ecb46005/scholarships_in_sc_no_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd48961-cdb8-4673-851a-05286376483c/89996138780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d3f261-62e7-45c0-a720-8619adf3c3f0/nitirij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f5a7cb-43b8-4a3c-b027-704e2f11a531/kung_fu_panda_3_movie_free_download_in_tamil_mp4.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_off0000f493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF493 5176 bytes
SHA-256: 7f51aadc383663531e7183ba082901b972f9e22db6f71aaeb571a5043a436afa
font_01_sfnt_off000105f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F3 1240 bytes
SHA-256: 84fc5ac20f1203893b8ee2220d2ead489111cee687e0e794cacb0bf792f76d9e
font_02_sfnt_off00010cff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFF 11536 bytes
SHA-256: cde82869d12afcbdb763233888d6830cf53d22fbdff9a1606b1e30498b438b48

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