Malicious PDF — malware analysis report

Static analysis result for SHA-256 f46b2a785ed99cc9…

MALICIOUS

PDF

38.4 KB Created: 2020-08-19 19:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f7c41bd9c971a1ccfb3da98a692b5c6 SHA-1: fec93ccf48a7162d479c185f0e10d6d92d093eda SHA-256: f46b2a785ed99cc9e78dc2c4cecad1c2273585289fdba8089e5db59cd4ffa4fd
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, appears to be a lure related to a Honda GX200 power washer manual. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm designed to drive traffic to malicious sites.

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/pify?keyword=honda+gx200+power+washer+owners+manual
    • http://talixul.thetailgaterstx.com/uploads/1/3/1/4/131453574/wufizeloj.pdf
    • http://files.yogainhornsby.com/uploads/1/3/2/6/132681294/xirovunudato-solatop-wukumonip-dozazavo.pdf
    • http://lotuviz.genesis-park.com/uploads/1/3/0/8/130815009/tumonagifugusev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/apprendre_espagnol.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/96165863317.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/46730623636.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/58395586923.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/jopat.pdf
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/mathematical_logic_books.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/lirojimurulijoje.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/setejo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4353/4486/files/pikopogunexubeli.pdf
    • https://cdn.shopify.com/s/files/1/0431/4238/1725/files/fatuzifeganonetuzu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b28.bin
5d571e3afa72571458850f83cec48ec64c5809d2603ff6920d2530bd6205e6bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B28 5524 bytes
font_01_sfnt_off00005dc8.bin
9ff05b346df763d59742cef903a84c7992232de4849da34553fa9bf35faf15bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC8 9636 bytes
font_02_sfnt_off00007ea2.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA2 4324 bytes