Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06494d1badb9fd2…

MALICIOUS

PDF

58.3 KB Created: 2020-08-29 21:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf539a3f0c7e5c9ed78f22a44a5f3119 SHA-1: c99d3ecbeffbadb80088baf797f8381bd8db940b SHA-256: e06494d1badb9fd28a42b925b62678881bd77c18242a24232f3ae9c7c2548836
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 'https://ttraff.cc/wix?keyword=cowboy+bebop+movie+english'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0432/0703/2990/files/epidemiology_of_bovine_tuberculosis_in_zambia.pdf'. The document body, though heavily obfuscated, contains references to the lure and the redirector URL, suggesting a social engineering attempt to drive traffic to malicious infrastructure.

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/wix?keyword=cowboy+bebop+movie+english
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/epidemiology_of_bovine_tuberculosis_in_zambia.pdf
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/32942897718.pdf
    • https://cdn.shopify.com/s/files/1/0435/8111/2483/files/follow_a_player_script.pdf
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/sokopixumubed.pdf
    • https://cdn.shopify.com/s/files/1/0437/6412/1749/files/41394121697.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/45340910475.pdf
    • https://cdn.shopify.com/s/files/1/0428/8751/2220/files/job_vocabulary_esl.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/gudube.pdf
    • https://cdn.shopify.com/s/files/1/0440/0057/5638/files/zotelerapuzinurifiwub.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/arthur_miller_playing_for_time.pdf
    • https://static.usrfiles.com/ugd/b8c837_cb6f0d2e3f224ffdbc54b9370b056c71.pdf
    • https://static.usrfiles.com/ugd/a771bd_54a75fbc602a496ca8592bbcd415bf2e.pdf
    • https://static.usrfiles.com/ugd/b8c837_eeb5fbc71b5f41eba42156967372d0cf.pdf
    • https://static.usrfiles.com/ugd/912de2_82970e06ac7f4f6889cfa947e3edfd6e.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009102.bin
8e2a60de7f3103332bd18e3831faceea8d6f327ad5f0197cd03ea384ddaa271a
pdf-font-stream PDF embedded font (sfnt) at offset 0x9102 5404 bytes
font_01_sfnt_off0000a3d0.bin
a8ab6bd154ee80ee76cdb9cd5cd4125d876f1866ccd690e7e42eb1a16e8a68f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D0 5224 bytes
font_02_sfnt_off0000b58f.bin
ca40f8bda377537d6789b73bb4078bb8a8cd648a663542e519172416605f1198
pdf-font-stream PDF embedded font (sfnt) at offset 0xB58F 10980 bytes