Malicious PDF — malware analysis report

Static analysis result for SHA-256 993755fc42c825ae…

MALICIOUS

PDF

43.2 KB Created: 2020-09-19 02:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b33f722aece4c707d1b66d3b9fcf01e SHA-1: 92dc71cf85dd3cb23dc68e022132d3685b74082a SHA-256: 993755fc42c825ae2ba057792fe0169d2fb65b96ea6676a8f654ed85125dd752
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, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'ttraff.me', which is used to lure users with a 'google world map games' keyword. The document body is heavily obfuscated, but the presence of this malicious redirector and the link farm strongly suggests a phishing or redirection attack. No scripts were extracted from this sample.

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.me/wix?keyword=google+world+map+games
    • http://files.ellashannon.com/uploads/1/3/1/4/131412558/runebatuletoli_sopanaf_duxaw_gakuxi.pdf
    • http://files.myelektra.com/uploads/1/3/1/4/131408056/8105876.pdf
    • http://files.escanabarotary.org/uploads/1/3/1/6/131606111/636086.pdf
    • http://buzuz.energyhealingconference.com/uploads/1/3/0/7/130776074/pomevakevuganuwe.pdf
    • http://files.waltwhitman200.com/uploads/1/3/1/0/131071167/8380110.pdf
    • https://1c30081c-fed9-40f8-966f-0be0027cbbe3.filesusr.com/ugd/1715bf_5b33d78b6b95494584973cdceafb5981.pdf?index=true
    • https://f62d4893-62a4-47e5-a2fb-6a3211d78ebd.filesusr.com/ugd/c8a981_6f7f3782b62b481dbf3c31711a319d15.pdf?index=true
    • https://f96503fc-4653-4733-9dd5-aa4dfa15baf4.filesusr.com/ugd/eb4c03_93954e0b0e9b41afb5f490b71967e3f0.pdf?index=true
    • https://1bda80a1-4a94-4ff0-963b-aeebaf1d8102.filesusr.com/ugd/3d0627_daa8483a824941ecad3d79851fa112ce.pdf?index=true
    • https://316a4b95-730a-4417-b096-fa7795e48ba9.filesusr.com/ugd/b98abb_6695e4409f184a0dbc8e8313ed6bc0ac.pdf?index=true
    • https://6969eff2-f335-4e2a-9c34-08c07b345634.filesusr.com/ugd/865d50_6051fbfdce7c4a6c92585465fed83397.pdf?index=true
    • https://c33656c7-60c8-4866-956a-fbce51742321.filesusr.com/ugd/e2f197_155852de59a8458c806ee8feb20ad24a.pdf?index=true
    • https://43332076-fa26-499d-a127-47c1c98b810f.filesusr.com/ugd/21e9e0_e73c24c363fc4fb0a404bd1a9e69e735.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/9706/2564/files/56319131089.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/detakovenosutejuf.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_off00006a11.bin
e03cd65cc840046928b0c55279899f0b544bfbe1bbd18bab18bddb6530879b2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A11 5400 bytes
font_01_sfnt_off00007c6f.bin
00c79eddae241d861ea09581457420c811ce2bc92dd8b7e9ab9af903fb1e1f51
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6F 10472 bytes