Malicious PDF — malware analysis report

Static analysis result for SHA-256 da35051a7fdd2ee6…

MALICIOUS

PDF

33.7 KB Created: 2020-08-18 16:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cfdfaa68ad127261821ca3eb295c38f SHA-1: c6d648d5113cf16a46af5119ad84d1815fec170a SHA-256: da35051a7fdd2ee67edbf46280c6765164c6e06cebd6495b124f26b3b3a9a365
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=audio+song+breathless+by+shayne+ward', which is likely intended to lure the user to a malicious site. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious redirector.

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.cc/pify?keyword=audio+song+breathless+by+shayne+ward
    • http://domipet.hellobeautifulmn.com/uploads/1/3/1/3/131383664/55e25f851.pdf
    • http://files.kaetebrittinshaw.com/uploads/1/3/0/7/130740222/de952a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/fagetibadivejovifit.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/94743748908.pdf
    • https://cdn.shopify.com/s/files/1/0431/4677/2646/files/50750682777.pdf
    • https://cdn.shopify.com/s/files/1/0432/4071/8493/files/jawusisanetiluvidu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/5e_cleric_spell_list.pdf
    • https://cdn.shopify.com/s/files/1/0449/5890/8584/files/soccer_functional_fitness_training.pdf
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/wogoguti.pdf
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/jexuvanemerojebikezibedow.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/89340977185.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/puzenipufiposegafupimori.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/pofoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3867/7924/files/buwujuruzirobivokuzapeg.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_off0000470a.bin
ac5353c2d4c6404fc8880089a2e79cbe892216f76826b9875ff7edcb05c888b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x470A 5412 bytes
font_01_sfnt_off00005979.bin
27101792ad5657a1155ac7ec59efc5022dbe0e54520b18e5af9d2f6246501d92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5979 9516 bytes

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