Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ff031db937784a…

MALICIOUS

PDF

53.1 KB Created: 2020-08-08 03:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c3f848fad91e7aa74897f6b944ef738 SHA-1: 1ade9b48f3a3cb05b495aac421d6d60748ba17d3 SHA-256: 93ff031db937784adc278848c3378cd38b734cc86173035829262429287012be
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links points to a known malicious redirector, ttraff.com, which is designed to obscure the ultimate destination. The document body, though partially corrupted, suggests a lure related to 'auxiliary verb list with examples pdf', likely to attract unsuspecting users.

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=auxiliary+verb+list+with+examples+pdf
    • http://files.aircombatbattlefield.com/uploads/1/3/1/1/131164129/3478183.pdf
    • http://files.pilgrimlutheranfreedom.com/uploads/1/3/0/7/130775735/6988908.pdf
    • http://gegaveji.haywardfitnessfanatics.com/uploads/1/3/1/4/131454106/jopagodekavonefe.pdf
    • http://xukelibo.awallacemarketing.com/uploads/1/3/1/4/131452883/604e6.pdf
    • http://files.cafezippy.com/uploads/1/3/1/3/131398224/vipoj.pdf
    • https://cdn.shopify.com/s/files/1/0440/1247/0422/files/learning_management_system_proposal.pdf
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/vejisojumow.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/anderson_bridge_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/rebanikalomenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/67203937559.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/kegamagijabexoreti.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/97427954072.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajomuxufukurojudi.pdf
    • https://cdn.shopify.com/s/files/1/0438/3513/0018/files/31832605619.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/58539530034.pdf
    • https://cdn.shopify.com/s/files/1/0433/8886/2614/files/gekotalunogorefopa.pdf
    • https://cdn.shopify.com/s/files/1/0439/9503/7854/files/7644818650.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_off0000899e.bin
7882ff74850b0e9c4d33ac02728d60aa7f7c0e20d4fa14e9594fb0983d0e7087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x899E 5732 bytes
font_01_sfnt_off00009d0a.bin
3153370aa2a33ca8eea19314317a8c2c216b013f67d831825e1635e08344f836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0A 12948 bytes

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