Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4b014dbc253911…

MALICIOUS

PDF

39.8 KB Created: 2020-08-28 12:51:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 452231c43706e1f3e78f87c6064758bd SHA-1: 53b5eab6530379d433d530168f83b0e3281b933f SHA-256: cc4b014dbc2539111147454c3084d6c5af785458eaeef1b759812eb4606fa487
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a phishing or scam attempt using a link farm to obscure the final malicious destination. The document body, though heavily corrupted, contains the URL that triggered the malicious redirector heuristic, reinforcing the attack pattern.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=bosch+silence+plus+44+dba+repair+manual
    • http://files.warrencountyfoodcorps.com/uploads/1/3/1/3/131378993/bujexevapapufe-goduxelobo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/words_with_periodic_table.pdf
    • https://cdn.shopify.com/s/files/1/0435/3838/3007/files/60238474251.pdf
    • https://cdn.shopify.com/s/files/1/0432/6080/5280/files/tamilrockers_movie_site.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/37067538223.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/piguxifuka.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9583/files/72967339714.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/cutnell_and_johnson_physics_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/numukaziwezoton.pdf
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/17372336443.pdf
    • https://cdn.shopify.com/s/files/1/0433/5661/8911/files/zalejepad.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_off00005d81.bin
16017a9b42448f98fb7cae88a48878bc2c18406e4f30ae259e413ab9fd612406		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D81 5588 bytes
font_01_sfnt_off0000704a.bin
0ff43e2cca09d1be0c302b8c50fea0e8e08999325d92674a2a582566e82af7ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704A 10004 bytes

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