Malicious PDF — malware analysis report

Static analysis result for SHA-256 19cfe91c95bde4f0…

MALICIOUS

PDF

35.6 KB Created: 2020-09-01 02:05:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51a295deaf9eeaa63a79aff924ac1294 SHA-1: 054385a5689f4735cd052727dc4cab36d3cf9903 SHA-256: 19cfe91c95bde4f0ab40beb2d6fc253988f9fb84a6defcfafce30162a96ea63d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=akebono+brake+industry+co+ltd+annual+report'. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to the same annual report and the malicious URL, reinforcing the lure. The presence of a large number of external PDF links also suggests a link farm or SEO manipulation tactic.

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/wix?keyword=akebono+brake+industry+co+ltd+annual+report
    • https://cdn.shopify.com/s/files/1/0432/5693/8646/files/50932150343.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0728/files/34010762423.pdf
    • https://cdn.shopify.com/s/files/1/0450/3748/6238/files/hpv_e_cancer_de_boca.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/16059094863.pdf
    • https://cdn.shopify.com/s/files/1/0438/4194/5760/files/2328043800.pdf
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/ejercicios_resueltos_de_arquitectura_de_computadoras.pdf
    • https://cdn.shopify.com/s/files/1/0429/8620/9439/files/57363300719.pdf
    • https://cdn.shopify.com/s/files/1/0448/2321/6290/files/princeton_review_mcat_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/6700/5333/files/gezixekuwoxer.pdf
    • https://static.usrfiles.com/ugd/b8c837_5be3f9a172cd4177b11731fd3b77c14b.pdf
    • https://static.usrfiles.com/ugd/63022f_d1d7bca4d820405487d5b36d959db5db.pdf
    • https://static.usrfiles.com/ugd/67f5f7_ad1c9d85cd5347169bb288f0f9950994.pdf
    • https://static.usrfiles.com/ugd/5a1791_4b8e523e467c473b9da14baf605b5192.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/printable_doubles_math_facts_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/karthika_puranam_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4522/3581/files/79352212943.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_off0000464d.bin
19dee9fde1e1ba790ef0c56ccb211b5711c24ca2bf0fdc49758d8e7edfd80bed
pdf-font-stream PDF embedded font (sfnt) at offset 0x464D 5364 bytes
font_01_sfnt_off0000589e.bin
3a84cb696766bba2378cecf0b932e7e627d1567462dc4ab25a30c38949714cc0
pdf-font-stream PDF embedded font (sfnt) at offset 0x589E 12044 bytes