Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb7786c4e8dd732…

MALICIOUS

PDF

43.3 KB Created: 2020-08-12 01:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cb09bb6c48905f77d22192240034482 SHA-1: 2ac1280d87675cd0ea9ff7b89e62335f8675e020 SHA-256: 8fb7786c4e8dd732cd3692f4b51c1782e1c9da10a1770bbe0e716c6b24249986
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=switzerland+schengen+visa+application+form+pdf'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external PDF links, one of which is 'https://cdn.shopify.com/s/files/1/0432/6624/4766/files/pressure_gauge_calibration_by_dead_weight_tester.pdf'. The document body, though partially corrupted, contains text related to 'Switzerland schengen visa application form pdf', reinforcing the lure. The primary malicious link likely serves as a gateway to a phishing or malware distribution site.

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=switzerland+schengen+visa+application+form+pdf
    • http://files.larsenhusby.com/uploads/1/3/2/6/132696048/rolezidib.pdf
    • http://jofasi.geophysical.eu/uploads/1/3/0/8/130814347/8454386.pdf
    • http://xufesapen.foothillbasketball.org/uploads/1/3/1/8/131871390/guzalu-luropu-dexigoligisemid.pdf
    • http://files.loganmona.co/uploads/1/3/1/3/131379740/purowi.pdf
    • http://files.milaraphael.com/uploads/1/3/1/1/131163533/1363654.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/pressure_gauge_calibration_by_dead_weight_tester.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/calculus_and_analytic_geometry_by_howard_anton.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/dujamivamijufafebazoluzu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3452/6375/files/1264393214.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/43304447097.pdf
    • https://cdn.shopify.com/s/files/1/0429/4751/0435/files/el_feudalismo_2_eso.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/8094815901.pdf
    • https://cdn.shopify.com/s/files/1/0449/8564/7272/files/calculus_early_transcendental_functions_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/55589806409.pdf
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/85192422290.pdf
    • https://cdn.shopify.com/s/files/1/0432/6840/7464/files/program_convert_to_word_support_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0437/2735/6056/files/13141330663.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_off00005d90.bin
14fe7afcd3028e5184ed26501e68bdd29981f365633f8e71ee0dae8d32323cb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D90 5664 bytes
font_01_sfnt_off000070b8.bin
315586de987fc8a0f1443335a5f998a73728ac6ff70bbdc5e27db92841833f8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x70B8 9716 bytes
font_02_sfnt_off000091fa.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x91FA 4324 bytes