Malicious PDF — malware analysis report

Static analysis result for SHA-256 a533fe8ebc1d6669…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 23:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bed72cba89ac7261df6e2374e14da85b SHA-1: 792b04ddff2903d1c4b546f55ca3a504c7adb02a SHA-256: a533fe8ebc1d666994c2c7c86baae40ff4b83c0a59ad00e087fb6df92d9f09ed
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, a common tactic for SEO link farms. One prominent link, 'https://ttraff.com/wix?keyword=banarasi+babu+full+film+hd+video', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the same movie title, suggesting a lure to drive traffic to the malicious URL. The ML classifier also strongly indicated maliciousness.

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.com/wix?keyword=banarasi+babu+full+film+hd+video
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/91491263860.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/new_oxford_thesaurus_of_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/bokupif.pdf
    • https://cdn.shopify.com/s/files/1/0434/7166/7360/files/vezukerigulavewavobexera.pdf
    • https://cdn.shopify.com/s/files/1/0446/2955/7411/files/global_asset_allocation_with_equities_bonds_and_currencies.pdf
    • https://cdn.shopify.com/s/files/1/0430/6701/5329/files/nirarevemowewofajovereba.pdf
    • https://cdn.shopify.com/s/files/1/0448/4985/6669/files/basic_grammar_rules_for_writing.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9283/files/ritanonosutifavetofategem.pdf
    • https://static.usrfiles.com/ugd/d63aaf_b788bbb3301e4814b421addabb322a23.pdf
    • https://static.usrfiles.com/ugd/67e251_e1c36c885dd54462843aa7b0505d3acd.pdf
    • https://static.usrfiles.com/ugd/2074c9_7254dd6f395c408cbb301685c26b4f13.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c5d0e8ef8cc449fb11bb7d577dc25a8.pdf
    • https://static.usrfiles.com/ugd/fd3290_d53425e3639249d687cd8d454fe79407.pdf
    • https://static.usrfiles.com/ugd/34ec99_a47ca8f25af249d0add8e7da662d64f4.pdf
    • https://static.usrfiles.com/ugd/ad2ade_e07924d035dd4e9c8f4dfc45f0cfa620.pdf
    • https://static.usrfiles.com/ugd/822ecd_791e6a6101324c60aa1b8fbb33266141.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_off000050d8.bin
d6b265b17fc2949f4e473d9e1f6faffec45845b9cb5d1328b8109627fd620779
pdf-font-stream PDF embedded font (sfnt) at offset 0x50D8 5396 bytes
font_01_sfnt_off00006308.bin
8e06229ad1d441c0bb1bd2a4428bcf25da6c62744e8203b36a85afb17a5f1800
pdf-font-stream PDF embedded font (sfnt) at offset 0x6308 10048 bytes
font_02_sfnt_off000085ad.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0x85AD 16164 bytes