Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d32282ee1ee2928…

MALICIOUS

PDF

40.2 KB Created: 2020-11-04 19:02:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 25ae438b448d9fbaf176904cb660e8b8 SHA-1: 225cbbfafb473b360e13690fb5ebb369d5d954c0 SHA-256: 2d32282ee1ee2928cfd38e602ffd2f5a34736d3a95b0d5fc6fbd43d9493f7f1f
94 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 indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://cctraff.ru/strik?keyword=another+term+for+an+icv+is+cyber', is confirmed as malicious. The document body also contains this URL, suggesting an attempt to lure the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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/strik?keyword=another+term+for+an+icv+is+cyber In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5fa0e25932224.pdfIn PDF document text
    • https://rogenogenitel.weebly.com/uploads/1/3/4/3/134316557/4982371.pdfIn PDF document text
    • https://renupipa.weebly.com/uploads/1/3/4/3/134383378/3987149.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/dobanabe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_5f970e564706e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447669/normal_5fa22d4859732.pdfIn PDF document text
    • https://kageketiwef.weebly.com/uploads/1/3/4/5/134581137/kigexexak-mawovalewi-jobijuzekidavor.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/vexosafugunu/97970862380.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/reading_wonders_sound_spelling_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/lexan.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_off0000600c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600C 5380 bytes
SHA-256: ff9e5564c6f97faa9fd9406a91d45aa01c3efcbbc6babb9fbd8dc3b9438a1605
font_01_sfnt_off0000723a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723A 10324 bytes
SHA-256: 86664b4661c35066305bf99c9fc1fa6a69448a98009ac329ad681499087e8634

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