Malicious PDF — malware analysis report

Static analysis result for SHA-256 812e240023aebdac…

MALICIOUS

PDF

107.5 KB Created: 2020-10-28 05:59:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f62e52eddfe2ba3ef684d512cba18984 SHA-1: 95264733455a53b0b1d8f30a9ec47d4cde197ed1 SHA-256: 812e240023aebdaceece90d279930d94de3c84f5e02b3530d35c340c00d1b2f9
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 linking to known malicious redirector infrastructure, specifically pointing to 'gettraff.ru'. The document body, though heavily obfuscated, contains the URL 'https://gettraff.ru/pify?keyword=dragon+quest+8+alchemy+walkthrough', suggesting a phishing or scam attempt. The presence of numerous PDF links also indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=dragon+quest+8+alchemy+walkthrough In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377371/normal_5f8c8fd989718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374860/normal_5f8d3c33627f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392867/normal_5f93da998110a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f8742f616252.pdfIn PDF document text
    • https://kifisiwa.weebly.com/uploads/1/3/4/2/134266158/3955007.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/7711683.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379474/normal_5f960496007f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370053/normal_5f8be34e58bfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403808/normal_5f955d0a7d843.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422377/normal_5f9741f216b8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f8766221a3f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389354/normal_5f941680a6368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383797/normal_5f92a0928fc8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f871d4bf2612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390999/normal_5f91f4f42a22d.pdfIn 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://cdn.shopify.com/s/files/1/0435/4532/9832/files/japesazokexudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9823/3760/files/class_11_commerce_maths_ncert_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3852/1544/files/zidopokagofomulamuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dd9f65e-7a24-413e-8126-79c19ce21a09/53887617747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec83dfdf-40a1-487b-8bec-36d9cdfb1cce/kingdom_new_land.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/488f5992-a026-4831-8d01-2194d1c39388/bunker_hill_security_h.264_4ch_digital_video_recorder_manual.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_off000152b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152B7 5624 bytes
SHA-256: 5ec4d52ba11074a35e202c67caa88ec33d064c34cfafa8db7f2990f07c5d9599
font_01_sfnt_off000165be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x165BE 14204 bytes
SHA-256: c1e28859fdec16295b715f4cf97ed6c3a4771dfb45e6cf86a31cc0a5c6e256d9
font_02_sfnt_off000191c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191C1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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