Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc6a2c7dfaafab4f…

MALICIOUS

PDF

38.6 KB Created: 2020-08-01 20:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60c422ca33a778c947630ca4b1a61b21 SHA-1: 6e9ccbbb901defc82c258bb174c828faead9b914 SHA-256: fc6a2c7dfaafab4fbae3b67a2a5d36a62ff5620eb40b05b4cda984ba896f2d44
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=little+alchemy+cheat+sheet'. Another critical heuristic identified a PDF link farm, indicating a potential SEO poisoning or spam campaign. The document body, though partially corrupted, contains the text 'Little alchemy cheat sheet', suggesting a lure to disguise the malicious intent.

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=little+alchemy+cheat+sheet
    • http://files.emmausny.com/uploads/1/3/0/8/130813357/c28288.pdf
    • http://files.batrssocal.com/uploads/1/3/1/3/131384789/vipibifoxoteroxu.pdf
    • http://files.missmissionminded.com/uploads/1/3/0/7/130776401/9309ce2.pdf
    • http://files.now-hope.org/uploads/1/3/0/7/130776673/mitawarezub-retemepaxaxas-mosiduga.pdf
    • https://cdn.shopify.com/s/files/1/0435/4736/1439/files/warizowoderowenubomobuka.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/82833686414.pdf
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/matujipiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3827/6760/files/zudenibogipipuwedafovox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0814/7112/files/dadadasatoserujotozenof.pdf
    • https://cdn.shopify.com/s/files/1/0428/7853/3788/files/97576344002.pdf
    • https://cdn.shopify.com/s/files/1/0430/1262/0447/files/niborululin.pdf
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/lefupanuginebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/73859812748.pdf
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/xotufujele.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_off00005a95.bin
c81daf5c9d3eb2f7f502e3283b121e2ad496ea1d9a74a7e551b0ab62f0a9c43e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A95 4984 bytes
font_01_sfnt_off00006b6d.bin
1fb6233bbc90789d11fe3db0189a566cd867f2c52e90b6d0a232b92e4c1175cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6D 10100 bytes

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