Malicious PDF — malware analysis report

Static analysis result for SHA-256 47649a0b7f416a47…

MALICIOUS

PDF

41.2 KB Created: 2020-08-24 19:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06bf8f9bfc5ebaacf3e1c6fda78c85c4 SHA-1: 8b71cdc7819c0fb864f92e3c26c98401b7abde43 SHA-256: 47649a0b7f416a472e8452d5005d9e56e9b7173040af671b30123b53adfb1956
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to song chords, directing the user to a URL hosted on 'ttraff.ru'. This URL is flagged as a malicious redirector. The presence of a large number of links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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.ru/pify?keyword=the+answer+to+everything+joe+dolan+chords
    • http://files.sacredmusicfestival.org.uk/uploads/1/3/0/9/130969298/relizameveva.pdf
    • http://somet.utahyouthcourts.com/uploads/1/3/2/3/132303354/jurimagilivom.pdf
    • http://files.kaylacrance.com/uploads/1/3/1/1/131164382/wupaxawobepu-zinigu-xujogafobok.pdf
    • https://cdn.shopify.com/s/files/1/0428/4914/0902/files/tegakigarufajimasipol.pdf
    • https://cdn.shopify.com/s/files/1/0449/8548/3422/files/bidders_guide_nsw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/rodisufozapowisixi.pdf
    • https://cdn.shopify.com/s/files/1/0455/4902/7493/files/tubarolujaganusin.pdf
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/kigubifenazigazerij.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1273/files/kibunomuwazarizuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8458/6903/files/ralovibejajanetusukitukek.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/fonctionnement_de_l_appareil_respiratoire.pdf
    • https://cdn.shopify.com/s/files/1/0435/3150/1720/files/exercise_routine_for_weight_loss.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/82078746574.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/wenivavekoboxiki.pdf
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/42630340089.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/pavexosavaminefifiz.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_off00005545.bin
9d25c04f6fcbab91c0bca312bddca43a3b470453d731559e391d17d137cee7b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5545 5268 bytes
font_01_sfnt_off00006742.bin
62728c4913f1432228429100bdffa3134e6f4351dbb785b9794cbd978fa57cf4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6742 10088 bytes
font_02_sfnt_off000089c3.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x89C3 4324 bytes