Malicious PDF — malware analysis report

Static analysis result for SHA-256 f25e9a0b43600e00…

MALICIOUS

PDF

67.0 KB Created: 2020-08-22 10:40:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 030dd7f96a29a1965097f71faa012474 SHA-1: 2c2c99932113e7e9f608f6970dcbf6903629e8a4 SHA-256: f25e9a0b43600e00e23024704512cdc338514dc9798bd6b6772edf5c076c9602
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary redirector identified as ttraff.com. This indicates a likely attempt to lure users to malicious content, potentially for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=shear+deformation+synonym
    • http://fotemodi.clingersnatural.com/uploads/1/3/1/6/131606349/rinunevifal.pdf
    • https://cdn.shopify.com/s/files/1/0430/7409/3217/files/pegufoxamufawiku.pdf
    • https://cdn.shopify.com/s/files/1/0433/4229/9295/files/37811079185.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1460/files/fedetereb.pdf
    • https://cdn.shopify.com/s/files/1/0435/1354/4863/files/64319260013.pdf
    • https://cdn.shopify.com/s/files/1/0429/1202/2691/files/bokuzaxenovebarekosuduzek.pdf
    • https://cdn.shopify.com/s/files/1/0431/0525/5577/files/symbiotic_and_asymbiotic_nitrogen_fixation.pdf
    • https://cdn.shopify.com/s/files/1/0434/5993/6421/files/65885664773.pdf
    • https://cdn.shopify.com/s/files/1/0436/6109/9161/files/45780525822.pdf
    • https://cdn.shopify.com/s/files/1/0434/1402/8444/files/weed_firm_replanted.pdf
    • https://cdn.shopify.com/s/files/1/0438/4312/5405/files/narotekisavumokivadusawer.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_off0000a1e8.bin
07469adc76ccf0563b895a044464ae5d44ed4e177b0b68b325b1d93377d958e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1E8 5320 bytes
font_01_sfnt_off0000b3dc.bin
2b71173d1431590c771ae73f3c89e1b4f42aaae32f07ace5c735ea03963b4af7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3DC 16512 bytes
font_02_sfnt_off0000e835.bin
e4257d20f105335796276b007d57c075b9c832a781623afaeff23d4ba49fd844
pdf-font-stream PDF embedded font (sfnt) at offset 0xE835 16624 bytes