Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5f574e061f8703…

MALICIOUS

PDF

38.6 KB Created: 2020-08-01 21:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3397767ff6b45c6bf75c684f903d23e3 SHA-1: 705a72ffe62580d63ad6c4ac85fcea99b62d6965 SHA-256: 8c5f574e061f870373361c7b926721869d6f0292bbb56c5df5371263f5f0a2cd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a form download. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive link.

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=af+form+1206+download+pdf
    • http://files.fastorwrite.com/uploads/1/3/2/6/132695365/koxeferojojufeb.pdf
    • http://files.donnasvintageemporium.com/uploads/1/3/0/7/130775220/62898fe5e7d83fa.pdf
    • http://files.bayoujews.org/uploads/1/3/2/6/132681937/xosetorab.pdf
    • http://files.simplychicbynikki.com/uploads/1/3/0/7/130775970/95bf44.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/bovose.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7142/files/lowes_milledgeville_ga.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6165/files/fivobenawemoke.pdf
    • https://cdn.shopify.com/s/files/1/0432/0939/2285/files/junevaxurevufusofe.pdf
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/4283622395.pdf
    • https://cdn.shopify.com/s/files/1/0434/1999/2222/files/14125451187.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/zararesigo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/99933304746.pdf
    • https://cdn.shopify.com/s/files/1/0437/9846/2624/files/65141435464.pdf
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/vizuliloxo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/noxosovabamegar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/wazotudaremavelutunik.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_off00004e3b.bin
97f79ab1a2a96a3b37099a606d0d256c8402425003bdb058e8cb7c54f2ae8aea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E3B 5572 bytes
font_01_sfnt_off0000612e.bin
003efa0bb32c85b533872f4dc8b81fdb37122c66cc5472a7903ec0fbb922c742		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 14384 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.