Malicious PDF — malware analysis report

Static analysis result for SHA-256 289bd195ac380fdd…

MALICIOUS

PDF

58.6 KB Created: 2020-08-05 09:25:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54878fed2d29319beff392832042d040 SHA-1: a4e7a46184272333fba06c6b3c349f8dcdf2720c SHA-256: 289bd195ac380fdd149b24208358f6fcad04decc9ae8a230677e064ff0781db0
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 a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cannibals+all+pdf, which is linked to known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to malicious content. The presence of numerous Shopify links, while some are confirmed benign, likely serves to obscure the malicious redirector within a larger link farm.

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=cannibals+all+pdf
    • http://files.kmcrisisministry.org/uploads/1/3/2/7/132740384/vipos.pdf
    • http://zixipefon.mrpanellamusic.net/uploads/1/3/0/7/130740025/xofererisezip-bakupafonesaj.pdf
    • http://files.excellentreads4teens.com/uploads/1/3/2/3/132303082/voburazu.pdf
    • http://files.mndeathcollaborative.com/uploads/1/3/1/4/131406149/3b1094d83d.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/31475761224.pdf
    • https://cdn.shopify.com/s/files/1/0440/4979/3174/files/66560301908.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7232/files/30726801649.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/83579719299.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/jeramelof.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30899714004.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0432/7391/2488/files/54115610855.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/4774946882.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/vobupovivodetepida.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3786/files/vabanotosawe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.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_off0000a88e.bin
84b7a5208a129c6118f2cc2b0c0542519dac033d767f52bfe697a09272b3f4ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA88E 4984 bytes
font_01_sfnt_off0000b989.bin
22e5cf65ca66d5cfc8e8dc0be050a1b7a66961a43ec690027c93e3dc2616729a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB989 10416 bytes

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