Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a6db4ec416b72c…

MALICIOUS

PDF

42.6 KB Created: 2020-08-19 18:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93bc5687728e26fd709bda3907b14308 SHA-1: bf357470407b78c4a7f95501307fcfcf57a4b821 SHA-256: c9a6db4ec416b72c85f1dabf580e65d0acec830dd3bf94f331400c3782740760
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to its extensive use of external links, a technique often employed for SEO manipulation or to distribute further malicious content. One critical heuristic flagged a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=crappie+guides+near+me'. The document body contains garbled text but includes this URL and other PDF links hosted on shopify.com, suggesting a link farm or redirection strategy.

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=crappie+guides+near+me
    • http://files.intermountainregionpc.org/uploads/1/3/2/3/132303310/ludepu_rokevipipidaja_nejufagiva_funuwizapanat.pdf
    • http://nulataxir.janetbabymom.com/uploads/1/3/1/8/131856602/danajitiji-milidunuxapet.pdf
    • http://files.thechurchwithamission.com/uploads/1/3/2/7/132740692/zixowaxedul_busopimotem_padige.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/rufalo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2653/files/wimobodajixupeliwefusoto.pdf
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/risosemejomi.pdf
    • https://cdn.shopify.com/s/files/1/0439/3825/0910/files/photoshop_cc_2017_amtlib._dll_file.pdf
    • https://cdn.shopify.com/s/files/1/0437/2666/7925/files/tegifu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/fofami.pdf
    • https://cdn.shopify.com/s/files/1/0435/5604/4955/files/zezupekid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/2193048300.pdf
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/chilasow_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/66138295751.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/bitawumaruji.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_off00006927.bin
369f96d671d8a4df440eec086f4cfca22873afbbfaec126e3e799965f17a2933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6927 5152 bytes
font_01_sfnt_off00007a93.bin
106933b9cbc4ce6ef13507b13b2b3cd22c51c502385c90626e3fbe901c2916e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A93 10288 bytes

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