Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd1ab93b102591f…

MALICIOUS

PDF

42.0 KB Created: 2020-08-12 04:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a0d3eb32c8ebc55d4db506bc1379c19 SHA-1: ef3dca7535427d0c696fc4721032032c7124639a SHA-256: 4bd1ab93b102591f78157d5e60d6b1432e60f2dafa9620d54b7a6e02ff6bf7e4
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 'ttraff.com', a known malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of a link farm and a redirector indicates a social engineering attack aimed at leading users to potentially harmful content.

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.com/pify?keyword=calculus+a+first+course+mcgraw+hill+ryerson+pdf
    • http://files.thevipsuite-brands.co.uk/uploads/1/3/0/8/130874121/6794325.pdf
    • http://files.aventinaromancetravel.com/uploads/1/3/1/0/131070485/8701591.pdf
    • http://files.goodmedicineproductions.org/uploads/1/3/1/4/131483281/rilom-pubakixepevujim-sefosonare.pdf
    • http://files.pacer-drama.org/uploads/1/3/0/8/130813777/57c22cdc90a.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/64156269914.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/subnautica_lifepod_19.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/augustana_boston_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0436/9943/7721/files/79437022288.pdf
    • https://cdn.shopify.com/s/files/1/0440/9032/7205/files/99251260625.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/56713375544.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/josegagogobejes.pdf
    • https://cdn.shopify.com/s/files/1/0431/0299/4586/files/all_we_do_is_win.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/fafikoxaweniporazudefur.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/jirumalojunitagelaxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/tisewuxurevoro.pdf
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/2295057134.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/nidud.pdf
    • https://cdn.shopify.com/s/files/1/0437/3423/7345/files/pepoduzidowip.pdf
    • https://cdn.shopify.com/s/files/1/0433/4711/6197/files/pomaluregiwawogaxulerafe.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_off00006209.bin
6718fad1ab5886d62d5bbd0eb6e2889f5b26c501b3b518ff9b8e5db94d708c53
pdf-font-stream PDF embedded font (sfnt) at offset 0x6209 5668 bytes
font_01_sfnt_off0000753a.bin
f6ec0cd36a21caa24cbb97b98f71254594c9752ca9a661053a8dc2812690ece5
pdf-font-stream PDF embedded font (sfnt) at offset 0x753A 11004 bytes