Malicious PDF — malware analysis report

Static analysis result for SHA-256 f783728b5e2eb127…

MALICIOUS

PDF

40.1 KB Created: 2020-08-06 03:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86fbc7292c31d8df044551cadf11523d SHA-1: 942fd5629880a976b60c3146827f5004e7ee492e SHA-256: f783728b5e2eb1273f57c5aadc4d27569fe93614c4f1c5af31148c57afd7125a
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.ru, which is associated with malicious activity. Additionally, it hosts a large number of external PDF links, many of which are hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains the target URL, reinforcing the malicious intent.

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=real+estate+bpo+form+pdf
    • http://files.tegmedia.org/uploads/1/3/1/8/131856456/zanujase.pdf
    • http://files.lancasteravejazzfest.com/uploads/1/3/0/7/130775679/zuragugisor.pdf
    • http://files.newhopebaptistjarrell.org/uploads/1/3/2/3/132303382/tikebofibekewo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/18034317669.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/telewaxirexonapatujozulo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9734/1604/files/xuxikupafuzokisusig.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0635/files/34258317491.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/sulakakomaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2223/8375/files/combat_tournament_legends_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/toramaberepofajisupovem.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6662/files/blank_award_certificates.pdf
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/89013870576.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/63070580612.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_off00005d01.bin
b9b7472d25c49b2121201d9c7de388f62ad2dc8305c3cf6db312d762e621802c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D01 5332 bytes
font_01_sfnt_off00006f09.bin
5590cf4116cc822089c794fd2d7a397ab052d7595bfe7f6e0c9ffc798effe20e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F09 10912 bytes

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