Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4afbee912a7b627…

MALICIOUS

PDF

39.2 KB Created: 2020-08-31 01:39:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fdb9e32227ec4be15d7e2100dd62e2b SHA-1: 651de7ec6097b08739b15eefcc87188785191212 SHA-256: b4afbee912a7b6271d61962b595098aff99c612f25dbead9665da2efd5197708
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=dragon+ball+series+torrent'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The presence of a 'download button' lure further supports the malicious intent. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack vector.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=dragon+ball+series+torrent
    • https://cdn.shopify.com/s/files/1/0435/3199/3242/files/tolekuzarigozetivugi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1231/7603/files/the_betrayal_of_east_pakistan_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/rojavuvokaxolopuvoto.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7162/files/baaton_ko_teri_song_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0434/3375/4785/files/bodyweight_strength_training_anatomy_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/20168730401.pdf
    • https://cdn.shopify.com/s/files/1/0435/5837/1496/files/galofosulu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/fovoridapupujogofemutuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1742/1479/files/xigisuwokela.pdf
    • https://cdn.shopify.com/s/files/1/0433/4456/0281/files/cyanide_happiness_game_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/lubovibotokane.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4010/files/hec_aptitude_test_sample_paper.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zizamazigunonafimav.pdf
    • https://cdn.shopify.com/s/files/1/0435/0047/0438/files/carta_para_mi_novio_manualidades.pdf
    • https://cdn.shopify.com/s/files/1/0430/8605/3527/files/17994699274.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_off00005be8.bin
482cd7db5d3c021c94688307edb6010e64713d9779f86842c6ba27783e52aed0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE8 4992 bytes
font_01_sfnt_off00006ced.bin
d09be7aa336277ef754f09732f61eb54546d00e784bdc32a4a9c48a68afffef0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CED 10360 bytes