Malicious PDF — malware analysis report

Static analysis result for SHA-256 33271cf0c09206c6…

MALICIOUS

PDF

43.7 KB Created: 2020-08-04 10:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c9a63e13268d4ddce18becda3ab4285 SHA-1: 79c8696951f6d85f3e9bb54bade3b5c16dfe7f62 SHA-256: 33271cf0c09206c67a43859aaffd1e46837dc3ae156f8d9dc497c8a434ab4bec
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though partially corrupted, contains text related to 'dungeons and dragons 5th edition character sheet fillable pdf' and the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains, likely for obfuscation.

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=dungeons+and+dragons+5th+edition+character+sheet+fillable+pdf
    • http://files.loveshackcurbside.com/uploads/1/3/1/8/131859993/gegupomumave-josob-suzinovij.pdf
    • http://files.marcdurand.net/uploads/1/3/1/8/131857914/xutelebuduvag.pdf
    • http://files.crit.cloud/uploads/1/3/0/8/130874284/wezupasizujuta.pdf
    • http://files.susanlynchshamanicservices.com/uploads/1/3/0/8/130814785/b722ebc97788.pdf
    • https://cdn.shopify.com/s/files/1/0434/5852/7397/files/gijamivotopupaxogomi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/54957652573.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/pobipapilujorikepo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2919/files/61928003543.pdf
    • https://cdn.shopify.com/s/files/1/0429/5920/8604/files/mosave.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/silokizim.pdf
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/42358427217.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/pisodikedulebuketi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/turob.pdf
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/26621444506.pdf
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/warhammer_40k_orks_codex_7th_edition.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ec6.bin
0877e07a556ad9f57a29972302b4ca141d8eb1f5b173382acc7aff0c6ee11b7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC6 5560 bytes
font_01_sfnt_off000071aa.bin
3d82fd74169fb17e6190a83a3163ef8fa2795af11f0383ef12874ac18e96b25b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AA 9904 bytes
font_02_sfnt_off00009386.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9386 4324 bytes

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