Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f01266e6d189b7…

MALICIOUS

PDF

44.5 KB Created: 2020-08-30 20:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6271d4837e77058e06c16ecd888d3f3a SHA-1: 5817356ceb1f392a000401ebf14227c301244147 SHA-256: 82f01266e6d189b753e3fb70afc2c2f1db62afd79e6df6a1813d150e028782d4
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com. This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing. The document body, though heavily obfuscated, contains the string 'The mark of athena pdf', likely intended as a lure. The PDF also contains a large number of external links, characteristic of a link farm, with many pointing to Shopify domains.

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=the+mark+of+athena+pdf
    • https://static.usrfiles.com/ugd/73cb9e_4ccdea98fd2f4f10b8175cb49b543cf7.pdf
    • https://static.usrfiles.com/ugd/b8c837_714e4135be8f4c96a179b8141231f395.pdf
    • https://static.usrfiles.com/ugd/c068f8_43dd445fd49743da9c626c1bf474851b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae7da68bce8846499a4a1e36268d7291.pdf
    • https://static.usrfiles.com/ugd/4c1554_b6e4ddb25b2f43e28cd3c7a7299afcc0.pdf
    • https://static.usrfiles.com/ugd/b8c837_6741f90b353c4d09a2050c093fafc4bf.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/rules_of_parliamentary_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/vogerixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4287/3249/files/jurnal_akuntansi_pemerintahan_daerah.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/realtek_network_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1741/2501/files/7405602509.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6488/files/6095181934.pdf
    • https://cdn.shopify.com/s/files/1/0434/1678/0956/files/pdf_reduce_file_size_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0467/5190/8003/files/earth_sun_moon_scavenger_hunt_answer.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8757/files/building_construction_gtu_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/6901/4165/files/laporan_pendahuluan_bronkopneumonia_pada_bayi.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_off0000703e.bin
2ccaf7c11b8ba2b668a500ddcd99e4035a49e331659d3187c1f7d1d22b43a056
pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 5084 bytes
font_01_sfnt_off00008160.bin
e2a0c0cbcfa8d629f7734305a1b3dab6622a410b62324f241565755683365b50
pdf-font-stream PDF embedded font (sfnt) at offset 0x8160 10548 bytes