Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d563f740ec12cc…

MALICIOUS

PDF

42.1 KB Created: 2020-08-27 13:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3586444a611ff4b6287e54f874cd897 SHA-1: d39398644c2bee849a94bf43be3bc6ffb54edbd2 SHA-256: d7d563f740ec12cce0d2e8cb7dad212271a5e5e4c5228282fffbed7c4dcf3f96
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, with one specifically pointing to a known malicious redirector. The document body contains garbled text and embedded URLs, suggesting it is designed to lure users into clicking malicious links. The primary attack pattern involves redirecting users to potentially harmful sites.

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=mitoz+b%25C3%25B6l%25C3%25BCnme+slayt
    • http://files.szconstructionweimartx.com/uploads/1/3/2/8/132814241/55482d.pdf
    • http://files.canadianinstitutenaturalhlthayu.com/uploads/1/3/1/0/131070792/bugexelokoj_goraguriri_tugutemesepesuk_kukejobexa.pdf
    • http://files.audioallure.com/uploads/1/3/0/8/130874085/femuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/learn_arabic_language_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0465/0473/8966/files/android_studio_recyclerview_github.pdf
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/46006914267.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/desasuxizajosodosujuni.pdf
    • https://cdn.shopify.com/s/files/1/0436/2433/3472/files/60258434560.pdf
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/figanezefubumofudonon.pdf
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/76802896213.pdf
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/6773960285.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9773/files/87389989461.pdf
    • https://cdn.shopify.com/s/files/1/0429/6025/7177/files/2682411716.pdf
    • https://cdn.shopify.com/s/files/1/0444/4851/4215/files/latitude_5300_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/kuvibekalunasag.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/lusedotevixovikarek.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_off000056a4.bin
1a4f3e7540f55dba8b300b5ed48979bd96b3ed0f494a4b3f1595c23a02f376ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x56A4 5076 bytes
font_01_sfnt_off00006796.bin
784da4b66730af54f60ff6bcd3aca0510f1726d56fe5efd8bfb57744d8201173
pdf-font-stream PDF embedded font (sfnt) at offset 0x6796 11680 bytes
font_02_sfnt_off00008bb9.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB9 4324 bytes