Malicious PDF — malware analysis report

Static analysis result for SHA-256 805d466582d818d2…

MALICIOUS

PDF

38.7 KB Created: 2020-08-27 17:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bccc768a26a714b9a02491147baebd23 SHA-1: da4bc7eb75681e610f0dde77c181b66580417a6e SHA-256: 805d466582d818d2ceb4269b8d3dd95f4e1d64a5e2bb08c37448ca695cd4b6c2
150 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.cc/pify?keyword=parole+a+fleur+de+toi+slimane'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body, though obfuscated, contains the same redirector URL and several Shopify-hosted PDF links, reinforcing the malicious intent.

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.cc/pify?keyword=parole+a+fleur+de+toi+slimane
    • http://files.tmbrepairs.com/uploads/1/3/0/8/130873826/zorebegu.pdf
    • http://novuwuku.pondsidestudio.net/uploads/1/3/1/1/131164250/4247397.pdf
    • http://puvedov.mndnorthwiltshire.org.uk/uploads/1/3/2/6/132681464/duvugejivitij.pdf
    • http://xipevowe.nymica.com/uploads/1/3/1/8/131857758/bugovugoxan.pdf
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/45335691562.pdf
    • https://cdn.shopify.com/s/files/1/0434/0560/7070/files/lubekuvewukaroxugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/42076841326.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/17525544294.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1142/files/43527041206.pdf
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/all_information_hngu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4524/8407/files/learn_accounting_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5961/files/puwukij.pdf
    • https://cdn.shopify.com/s/files/1/0434/5190/8249/files/load_scene_unity.pdf
    • https://cdn.shopify.com/s/files/1/0437/0631/9001/files/mafewovijibofetefutese.pdf
    • https://cdn.shopify.com/s/files/1/0434/2572/6614/files/tasaxol.pdf
    • https://cdn.shopify.com/s/files/1/0464/8425/8984/files/kitigumiwudewexoronoruw.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_off0000566b.bin
bde32f56df3e7b629afbed59878caba43fba8a6f8de4fe298d9fd5aa6c10ef56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566B 5052 bytes
font_01_sfnt_off0000677b.bin
1b4f141598a1ce467c665bfec4c2ec8ee5dd9522847b47e683943de5c8e0cf6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677B 11828 bytes

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