Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a0b22aa1808554…

MALICIOUS

PDF

62.7 KB Created: 2020-09-01 08:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04a575d82f65c838e0526df93077a0e1 SHA-1: 963fcff084c690bce3cf7c4d2742944bf21fff41 SHA-256: d2a0b22aa18085544e5c81bf677096ff0e86eee82b60d008cf97ecfd6cbece1f
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=bhopal+city+bus+route+map+pdf'. This indicates the document's primary purpose is to lure users to a malicious site. The presence of numerous embedded links, many hosted on cdn.shopify.com, further supports a link-farming or redirection strategy. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=bhopal+city+bus+route+map+pdf
    • https://static.usrfiles.com/ugd/8127dd_4f74dd5872994735851d2736fdce2f47.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7faf0c4d8464fb0b9004b021cb2f28d.pdf
    • https://static.usrfiles.com/ugd/70c1f8_a08f1cdfa7374e64b68cc33bb389bce5.pdf
    • https://static.usrfiles.com/ugd/8b97dd_d4b9599e5f034a1eaf88a3b965b236cb.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/60713366882.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/garawetamimarigej.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/refotitoveduriti.pdf
    • https://cdn.shopify.com/s/files/1/0435/9671/0047/files/bukevoju.pdf
    • https://cdn.shopify.com/s/files/1/0437/7811/3690/files/40812952493.pdf
    • https://static.usrfiles.com/ugd/b8c837_77c975ca356f4feab207798eb7a5a9c0.pdf
    • https://static.usrfiles.com/ugd/74a852_3af22cac25f4494495cfcad144a784e6.pdf
    • https://static.usrfiles.com/ugd/576447_9ec2ce4cd1864cd6a85981959e99e8b6.pdf
    • https://cdn.shopify.com/s/files/1/0447/6112/0919/files/1_1_domain.pdf
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/sewezupigemadaxeko.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/tuwoxipavidugin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7401/8716/files/79282763741.pdf
    • https://cdn.shopify.com/s/files/1/0435/7259/2801/files/95044752214.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091c5.bin
ee0846eb27457b7734801a36a11bb729ae60ccd3efedf49696e6176e60c2b4a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91C5 5464 bytes
font_01_sfnt_off0000a455.bin
74bba2502bd90e56ef367e9f2bea5d4be8d1a2815e4aebf9b31b6c1a0680f4ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA455 10040 bytes
font_02_sfnt_off0000c6bd.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6BD 4324 bytes
font_03_sfnt_off0000d4bd.bin
6ce8f113a130b5e000f1ac5ed30560f428e8836a7926af952d9c01296f5a4f9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BD 7144 bytes

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