Malicious PDF — malware analysis report

Static analysis result for SHA-256 5201e700ae6764f1…

MALICIOUS

PDF

44.2 KB Created: 2020-08-15 09:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d27488789d308ef4cfd53c270cb6aec0 SHA-1: ccfca64b198e9ddbdd0c9ac3e54b0216b41104d9 SHA-256: 5201e700ae6764f1d45190b9471fce27d5537d909941719d2c8b6a094e8c13b3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body and heuristics indicate a deceptive attempt to appear as a downloadable resource, likely to manipulate search engine results or lead users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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://ttraff.com/wb?keyword=victoria%20aveyard%20glass%20sword%20pdf%20download
    • http://mujemoseg.tomhelp.us/uploads/1/3/1/4/131407440/3594047.pdf
    • http://sulowel.pilatesexcellence.com/uploads/1/3/1/6/131636612/7734901.pdf
    • http://files.poehaku.com/uploads/1/3/1/6/131607239/ab7f23f.pdf
    • http://files.thekinkhub.com/uploads/1/3/0/7/130776131/0e66c7ef2d1.pdf
    • http://files.themindfulmamablog.org/uploads/1/3/1/6/131606128/d89dd77f558f9f1.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3383/files/4th_grade_math_sheets_printable.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/que_es_riesgo_relativo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/41875120130.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/vemunexusuwewaram.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/kavekebimodezigapofo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8818/3447/files/65843140573.pdf
    • https://cdn.shopify.com/s/files/1/0430/9948/8410/files/fuzufeva.pdf
    • https://cdn.shopify.com/s/files/1/0439/5224/2856/files/benjamin_graham_formula.pdf
    • https://cdn.shopify.com/s/files/1/0437/4472/3098/files/mavebuxusiwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/replace_toilet_flange.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9777/files/51671725046.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dcb.bin
2d7ba27fcbbce20b2b06216bb3bc5248822534c03fa7519a8785eebbf263b995
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCB 5544 bytes
font_01_sfnt_off000080d3.bin
23bb9483b6f2cc0785f9fd5a1466d476627f37783b46279b2c4b22c16cf4108b
pdf-font-stream PDF embedded font (sfnt) at offset 0x80D3 10020 bytes