Malicious PDF — malware analysis report

Static analysis result for SHA-256 c59be4e3e2309abe…

MALICIOUS

PDF

47.8 KB Created: 2020-08-30 14:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a2afe0e4d67df4347b1d85c347b1ee4 SHA-1: 8be193ef19fcd4736e61fa59c8f0f790d06df693 SHA-256: c59be4e3e2309abe3594c76800e0f9098f7e91743377c65d068e3dcd7d708813
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector URL. The primary malicious URL identified is https://ttraff.ru/wix?keyword=impact+accelerator+data+logger, which is likely used to direct users to a malicious site. The document body, though heavily obfuscated, contains this URL, reinforcing its role in the attack. The presence of numerous PDF links suggests a link farm or SEO poisoning 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=impact+accelerometer+data+logger
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/80469770294.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/96890244430.pdf
    • https://cdn.shopify.com/s/files/1/0466/2404/7269/files/sample_of_application_letter_for_job_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/mozipasivowowadesorugije.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/wifegokubuvixi.pdf
    • https://static.usrfiles.com/ugd/409ca8_738972c8c7774e94a826f465223218b7.pdf
    • https://static.usrfiles.com/ugd/576447_8992a1d56abe4452bbac72e522ddc3e5.pdf
    • https://static.usrfiles.com/ugd/451461_2854b0e70cd34df39660fd5f3979a37f.pdf
    • https://static.usrfiles.com/ugd/b8c837_663a55f8981a44bc82b73d35778bb442.pdf
    • https://static.usrfiles.com/ugd/b3bc21_54ca4566b2e640119452ca8e2656df02.pdf
    • https://static.usrfiles.com/ugd/b8c837_00fea06aa38c4ce8bc87f5a3bba3301c.pdf
    • https://static.usrfiles.com/ugd/b8c837_274da813579f432e9db73af3b685073c.pdf
    • https://static.usrfiles.com/ugd/45e30f_ff33646834f24469bc3d121d425df0c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdbed6c4e27a470ea5da4210ba5f784f.pdf
    • https://cdn.shopify.com/s/files/1/0437/8614/1847/files/corporate_brochure_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/32271487886.pdf
    • https://cdn.shopify.com/s/files/1/0434/4070/1606/files/kawefatu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/bibiliya_yera_mu_kinyarwanda.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_off00007b8c.bin
81d59b0da9e4250500ec2c007434cb208e24720b7f661029a37552aaec9a788d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8C 5152 bytes
font_01_sfnt_off00008ced.bin
00ce26f8a39a7261a78ad515939ffc55bc95f3b8ef4407ea14269408a722c3ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CED 10760 bytes