Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa58a853a5f82bb7…

MALICIOUS

PDF

40.8 KB Created: 2020-08-19 17:02:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88c0b4014bbc5c974746d023596f7603 SHA-1: fc03b0d13d7445c544e827a7ca255797c3d73182 SHA-256: aa58a853a5f82bb764f6c61a29b3a94ae3c15619f07af06e04b5912e459a4384
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'mandated reporting training arizona' and the malicious URL. The presence of a large number of embedded links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector.

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.ru/pify?keyword=mandated+reporting+training+arizona
    • http://files.matthewwolosz.com/uploads/1/3/0/7/130739570/jimejumirivejuvijola.pdf
    • http://files.topthispizzacrusts.com/uploads/1/3/2/6/132695829/rujibopatu_pudoruvomenodek_xitujajimaxet_tixoxe.pdf
    • http://files.jdscrafts.com/uploads/1/3/0/7/130738896/f424ea.pdf
    • https://cdn.shopify.com/s/files/1/0431/4411/8423/files/45424192900.pdf
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/dajavujadenuluxavid.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/pedenipumawerugusefivasim.pdf
    • https://cdn.shopify.com/s/files/1/0432/1941/9291/files/buildup_of_unanswered_emails_crossword_clue.pdf
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/vebunevo.pdf
    • https://cdn.shopify.com/s/files/1/0461/9704/7447/files/crossword_answer_for_course_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0438/9067/1771/files/93210841940.pdf
    • https://cdn.shopify.com/s/files/1/0439/3297/5272/files/guwivapov.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/22755282910.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/vojaxeju.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/2997/files/68042221880.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9653/files/nebizunavekorepi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/gorurozidu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1453/files/absolute_phrase_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/anything_something_nothing_everything_exercises.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_off0000628e.bin
64181119868d8e72af8a03d06926ccbe4fa7d899c28aef6721fcc6d67d7b6514
pdf-font-stream PDF embedded font (sfnt) at offset 0x628E 4972 bytes
font_01_sfnt_off0000738c.bin
995c13aba5329cc6ae066a1566b612316ea0bc9abd72fe08d59b8f23895e8aff
pdf-font-stream PDF embedded font (sfnt) at offset 0x738C 10184 bytes