Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ca813d33345d89…

MALICIOUS

PDF

42.5 KB Created: 2020-08-30 12:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88732d57472c7ddd6742e3a39e4a9256 SHA-1: e4c325045378bb126247b5b0fcff6889bb2909cf SHA-256: 93ca813d33345d891a3157c52829ddf65d877f0595e0d1dd2bbf981ef8105bd5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains numerous embedded links, with the primary heuristic identifying a malicious redirector URL. The document body, though heavily obfuscated, contains references to the malicious URL and other Shopify links, suggesting a link farm or SEO poisoning tactic. The presence of multiple Shopify links, many of which are confirmed benign, likely serves to obscure 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.com/wix?keyword=chaos+making+a+new+science+pdf
    • https://cdn.shopify.com/s/files/1/0428/2266/4348/files/17631054402.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/50541840681.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/82199115642.pdf
    • https://cdn.shopify.com/s/files/1/0444/4743/2871/files/hopsin_ill_mind_7_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/6275/4461/files/adobe_photoshop_tutorials_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/5010183410.pdf
    • https://cdn.shopify.com/s/files/1/0432/9583/4276/files/im_a_celebrity_game_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1651/files/paxuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/gabezasibipiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/bobcat_skid_steer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/3149/4810/files/gobabuwedoras.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/28913145787.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_off00006855.bin
7f9c8d0f26e1ce225bf4a9cbf4b6cb981d4a28fe1681735d10774f6f0fa4a674		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6855 5504 bytes
font_01_sfnt_off00007aff.bin
b7c20e015c9a046813ecb06d7d5105cf21c9ea2dc0510805f0a140a31d6ae582		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFF 10052 bytes

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