Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d8dcb66225e92cb…

MALICIOUS

PDF

36.2 KB Created: 2020-08-31 04:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 024c5a215366131d6e7225e847886c0d SHA-1: 1ea22725b54a6ad211699ac3dbb97a80899ab1f9 SHA-256: 2d8dcb66225e92cb91bc9e053847fcad09442f7622288cdefa6b814d12442738
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with one identified as a malicious redirector. The primary malicious link, 'https://ttraff.cc/wix?keyword=coming+of+age+in+mississippi+online', is likely used to redirect users to a phishing or malware-hosting site. The presence of numerous other links, including those hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious destination. The ML classifier also strongly indicated maliciousness.

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=coming+of+age+in+mississippi+online
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/majufufuxiwumizifilifug.pdf
    • https://cdn.shopify.com/s/files/1/0439/5896/0286/files/aromatic_hydrocarbons_chemguide.pdf
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/bailey_and_love_vk.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/93398363665.pdf
    • https://static.usrfiles.com/ugd/d5415a_b61172df55d443b2b9d83c41626d1068.pdf
    • https://static.usrfiles.com/ugd/f4de5e_9aff6b87e6e8486787c582cb55a6f674.pdf
    • https://static.usrfiles.com/ugd/b8c837_946623de2c8d4ae1bfa3c9e658859ce4.pdf
    • https://static.usrfiles.com/ugd/685707_fa9ceb26abb9486ca1d726d91ee7eee4.pdf
    • https://cdn.shopify.com/s/files/1/0437/8673/1681/files/honkai_impact_3_guide_weapons.pdf
    • https://cdn.shopify.com/s/files/1/0430/4335/6821/files/26936827631.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/bmw_company_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0681/1560/files/banjara_punjabi_movie_hd.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_off000053c1.bin
f1be1cc9d0c62b384a74ef896a0cd0e32ca091c33a2fc3a3b783ca1a309fd20b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53C1 5032 bytes
font_01_sfnt_off000064d5.bin
8f5ced92aa23bc471e9396236d10016da36d8ecdac5b005d0eed1a455ac178b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D5 9284 bytes

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