Malicious PDF — malware analysis report

Static analysis result for SHA-256 439f09b481e50012…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 09:29:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7521b8e73949f4fe7abb19b3de948841 SHA-1: e149a37786aeb3e9b6fc42ca2fd3144bd8963a44 SHA-256: 439f09b481e50012f7cc13dc316b39a31b97397faae9c8b09e6b180eb6fa342c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF SEO link farm. One of these links, 'https://ttraff.cc/pify?keyword=autogenic+relaxation+script+pdf', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure.

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=autogenic+relaxation+script+pdf
    • http://files.koutoubiabeauty.com/uploads/1/3/1/8/131857626/393203.pdf
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdf
    • http://files.blackbullfrosterley.com/uploads/1/3/2/8/132816066/jogurimesekegun.pdf
    • http://sofir.eldoradopk8counseling.org/uploads/1/3/1/4/131438344/bukoxipevabu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5487/2214/files/zidufugasotalamelokigon.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/application_of_computer_animation.pdf
    • https://cdn.shopify.com/s/files/1/0435/7704/9247/files/dobiruradedibenakejan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/wogeba.pdf
    • https://cdn.shopify.com/s/files/1/0433/1972/2152/files/lo_unico_que_quiero_es_adorarte_letra.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/gonobovojapemelawusa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/la_cantatrice_chauve_ionesco_livre.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8131/files/3446051306.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/darexoxerolen.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064aa.bin
82f54866dfcedd9dd87453972e47c5b229072fbf52934c4bb7b08538f55e45ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AA 5380 bytes
font_01_sfnt_off00007708.bin
07db37529bd90305bf2b003f8266a4ffcacef1a73cd6b09d51f895093b8106fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7708 11056 bytes

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