Malicious PDF — malware analysis report

Static analysis result for SHA-256 915d1a31591a5969…

MALICIOUS

PDF

39.7 KB Created: 2020-08-21 03:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2023e9864539245dcba8e4bd345dce12 SHA-1: 3d2f99eb465c435dea8304c22711d861bb418e52 SHA-256: 915d1a31591a5969f40f3b0262c5cb2261a63142d1647907c171b92299e617f7
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is presented within the document body as a Google Sheets tutorial. This redirector likely leads to further malicious content or exploits. The PDF also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning attempt to increase visibility and 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=google+sheets+wrap+text+around+image
    • http://files.brca2inthe405.com/uploads/1/3/0/8/130874451/7040006.pdf
    • http://files.philoouweleen.com/uploads/1/3/2/6/132696214/1624554.pdf
    • http://files.beattieartworks.com/uploads/1/3/0/7/130739284/dapoloruwuleded.pdf
    • https://cdn.shopify.com/s/files/1/0434/6327/8758/files/scotts_wizz_spreader_settings.pdf
    • https://cdn.shopify.com/s/files/1/0430/8094/1721/files/64640545635.pdf
    • https://cdn.shopify.com/s/files/1/0429/1448/0287/files/kafowijirutizovepazu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/94555754818.pdf
    • https://cdn.shopify.com/s/files/1/0437/9557/9029/files/90x_action_planner.pdf
    • https://cdn.shopify.com/s/files/1/0437/7110/1338/files/2359831946.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/80035451033.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/193589547.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/vewerolugorepuzoxuji.pdf
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/69107581566.pdf
    • https://cdn.shopify.com/s/files/1/0462/1464/3866/files/community_bible_study_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0435/1492/1112/files/76055065464.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/93341754180.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_off00005ac4.bin
bf593061f8a76394f40c1bf3b9441aea112d3e154839879a0968babcba214779
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC4 5564 bytes
font_01_sfnt_off00006da1.bin
ece88f9aa5e61974b8d60a1a662557839580222435040c9026b66280ec20d8d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA1 10512 bytes