Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b5e23d391273ad…

MALICIOUS

PDF

41.9 KB Created: 2020-09-06 04:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a12ff889258160f321861d061e387a51 SHA-1: 100768fd27471dd3f204ac3bae89b322850acc8a SHA-256: e2b5e23d391273adc8ef24bdf1d5f474d3eb4e5d4af1b2950ed3ca641016de6c
150 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, pointing to a URL that appears to be a lure for downloading a movie. The document body also contains this URL, along with other embedded URLs that form a link farm. The primary malicious URL is https://ttraff.me/wix?keyword=blade+2+return+of+evil+apk, which is likely used to redirect the user to a malicious site.

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.me/wix?keyword=blade+2+return+of+evil+apk
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/wawujegekevok.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/60159356767.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/poxedodizedev.pdf
    • https://cdn.shopify.com/s/files/1/0436/5775/6825/files/teaching_english_grammar_to_esl_stud.pdf
    • https://static.usrfiles.com/ugd/078c79_17aae0ff7cd748df9557841c173f0828.pdf
    • https://static.usrfiles.com/ugd/0dd040_72f22bc66ba14aacb17e88cdf1229917.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/japedigenorezikorakuraseb.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/build_me_up_buttercup_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/9902471712.pdf
    • https://cdn.shopify.com/s/files/1/0428/5058/2684/files/wametosotopawamezaneje.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/chikni_chameli_movie_songs.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_off000064ec.bin
ee4a4ceb2c0f3bdf382cf579e154bc20e348c4be2b9eca26f8e95b8e868d3325		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64EC 5160 bytes
font_01_sfnt_off0000769f.bin
f4a0994fb76b7f6e4eea252a44de4d859fac675a61b78ca40fcb504e591feb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769F 10580 bytes

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