Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6290a2785208294…

MALICIOUS

PDF

92.7 KB Created: 2020-08-02 05:21:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99867a010828e38f0daa869d7598f51f SHA-1: e8453edb5246ad45dd6bab72c90813f89f2348c7 SHA-256: d6290a2785208294ba550f7ca3f260d1b25295207904119296b8cfb291863e27
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains a reference to the same URL and the 'Mass Effect 3 soundtrack', suggesting a lure to a malicious site. 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/pify?keyword=mass+effect+3+soundtrack
    • http://files.fauquiershowandsale.org/uploads/1/3/1/8/131871467/xapajofanesipamosobu.pdf
    • http://files.pbfishandgame.com/uploads/1/3/1/6/131637814/gexubosun-kisinugerexo-zipir.pdf
    • http://files.evansjuliana.com/uploads/1/3/1/0/131070152/magukobaku-giradoluso.pdf
    • http://files.sebandmili.com/uploads/1/3/2/7/132740965/890543.pdf
    • https://cdn.shopify.com/s/files/1/0433/4501/9045/files/64409370837.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/muzujetowu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/vmware_workstation_15_license_key_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0310/0836/files/27977872345.pdf
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/13311073117.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/dufawuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7978/files/gaxatolimesawapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/68608602418.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/xudowarokidegawewetesuje.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/jibutomowakasogudukorami.pdf
    • https://cdn.shopify.com/s/files/1/0438/2385/7824/files/10074043002.pdf
    • https://cdn.shopify.com/s/files/1/0429/2447/4531/files/20473890696.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_off00012eef.bin
7892cb0c57256c02a98024caafbcc75b61c95517a023c3d9bb2ac46a33f93d03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EEF 5216 bytes
font_01_sfnt_off000140cc.bin
098df13805a6e2e0a9fd6a952223fc54b1598786fd1acd8102f8c82c4bdeff13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140CC 10924 bytes

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