Malicious PDF — malware analysis report

Static analysis result for SHA-256 b082829329b987f3…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 05:24:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1c20cdd58ff47defb696feb52c1ec19 SHA-1: 40550c6b97c3f474109b2049e7a769eef5056f86 SHA-256: b082829329b987f383b7efe1b28ec37dee31fc0f6ec5c3ba0d69c953bc17c6de
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One such link, 'https://ttraff.ru/pify?keyword=theft+of+swords+free+pdf+download', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the same lure text and URLs, reinforcing the malicious intent.

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.ru/pify?keyword=theft+of+swords+free+pdf+download
    • http://files.georgannadean.com/uploads/1/3/0/7/130739012/22c0794a8.pdf
    • http://files.baileysandouille.com/uploads/1/3/0/8/130874134/c7f0da046b7.pdf
    • http://bebaj.thepaisleyrose.ca/uploads/1/3/1/1/131164250/mikowikadusuta_majavute_jaxipixexijijov.pdf
    • http://todefifov.azbasketballcoaches.com/uploads/1/3/1/3/131379803/pafatuvejigasanov.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/silurunabipopawigasasuweb.pdf
    • https://cdn.shopify.com/s/files/1/0434/3365/6476/files/english_present_and_past_tenses_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0454/7385/7686/files/candide_voltaire_romana.pdf
    • https://cdn.shopify.com/s/files/1/0432/8361/1801/files/95167697254.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/52943522607.pdf
    • https://cdn.shopify.com/s/files/1/0434/8008/8742/files/romiludubunupamadir.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4434/files/bobcat_e35_specs.pdf
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/69243434360.pdf
    • https://cdn.shopify.com/s/files/1/0432/8030/2238/files/pokabigemari.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6018/files/vogozopi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/bijegoderasomexapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/27658048546.pdf
    • https://cdn.shopify.com/s/files/1/0432/5061/4429/files/77839628716.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/cahier_de_vacances_maternelle.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_off00006798.bin
f9c3fd41d8c4b507c8384ba4ebed48d3206f142bc44ed3598a7dd7441c7ec6a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6798 5168 bytes
font_01_sfnt_off0000793d.bin
14df259cf61965774e6fc64f9bb5c318d1e846edd0f76c24e5767d640aa23a9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x793D 11036 bytes