Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc30b2569bbe8b58…

MALICIOUS

PDF

40.6 KB Created: 2020-08-22 16:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f0a5601127c2b29c556572916478dd6 SHA-1: 63d6098d238b6919538a6e7e48a08a2d434fea3d SHA-256: bc30b2569bbe8b5843a4d8b010d2b1e261c8004330759574991fae60bae5f23f
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, with a heuristic identifying it as a PDF link farm. One of the primary links directs to a known malicious redirector service, 'ttraff.cc', which is likely used to obscure the final destination of the attack. The presence of numerous links, many hosted on Shopify, suggests an attempt to broaden the attack surface or distribute malicious content through a seemingly legitimate platform. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the payload.

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=ipso+facto+reforms+construction
    • http://rafogi.jclvision.com/uploads/1/3/0/7/130739826/desazisotegisorow.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/gidokulajanelixubem.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/13088891395.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/madden_for_switch.pdf
    • https://cdn.shopify.com/s/files/1/0431/0122/5114/files/20192310327.pdf
    • https://cdn.shopify.com/s/files/1/0428/1486/5575/files/ibps_banking_awareness_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/58836116516.pdf
    • https://cdn.shopify.com/s/files/1/0438/4299/4336/files/brooker_biology_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/meez_hack_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/6343/4654/files/57325007038.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/vodumijekedod.pdf
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/takaxogagapopafiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/python_beginners_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7875/files/jixolekexuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/hemoptysis_guidelines_chest.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_off000062cf.bin
b8947f7762e56922175680b77142479faae8711fea7a6db383ca00762ac9e734		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 5064 bytes
font_01_sfnt_off000073f2.bin
77118714879be6ab65de011f17add39316f86745e030af1db73c283e6d8a5803		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F2 9868 bytes

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