Malicious PDF — malware analysis report

Static analysis result for SHA-256 da1c738ef8fe3860…

MALICIOUS

PDF

44.7 KB Created: 2020-08-08 18:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 959e83419b9843775d39ceafc0ed848f SHA-1: ec45357b6433f4111ed58ad1675bc1f92956048a SHA-256: da1c738ef8fe3860ef4ab3db22946e9e539e7bde09c64b4465c6ca57582e9ed7
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=arabic+english+translation+course+pdf', suggesting a lure for users interested in translation courses. The presence of numerous external PDF links, many hosted on Shopify, further supports a link farm or redirection strategy. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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=arabic+english+translation+course+pdf
    • http://files.deanedancecenter.com/uploads/1/3/1/4/131406344/wekalizuni_xukad_fifabujowigi.pdf
    • http://files.colinwhitby.com/uploads/1/3/2/8/132814996/8733788.pdf
    • http://files.wintercup-sportklettern.org/uploads/1/3/2/7/132712011/vupuxexise.pdf
    • http://files.cookcreativemedia.com/uploads/1/3/1/4/131453919/gawiwiwovawa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/josurexitajidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4544/6044/files/bimik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2106/files/47552502669.pdf
    • https://cdn.shopify.com/s/files/1/0437/2702/8375/files/36493847.pdf
    • https://cdn.shopify.com/s/files/1/0431/8491/4583/files/serosogunuxugukipoluwinix.pdf
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/assessment_and_evaluation_in_science_education.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/32384018828.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/30869897212.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/92729136636.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_off000070f4.bin
f054b05ca273e895baf3836fa5a38b5ece65e2a9313aed19d8a9941d23c1f1c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F4 5544 bytes
font_01_sfnt_off000083be.bin
e7f4fda242aacc6b0f86565c3e82120938c68f2588bc53b0b592386f30c4447b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83BE 10156 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.