Malicious PDF — malware analysis report

Static analysis result for SHA-256 3835e69855eb9af1…

MALICIOUS

PDF

43.4 KB Created: 2020-08-25 21:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bec686bd9746f59dfab139461e0c27f SHA-1: 6b0d7f9c5d10a492b4867127d59ab4bc5c42ce1e SHA-256: 3835e69855eb9af170578887ccf19c5ffd47bd8e1a252ee61e318892f0ebacf2
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment T1071.001 Web Protocols

The PDF contains a heuristic firing for 'SE_SECRET_RECOVERY_LURE', indicating it requests sensitive information like private keys or backup codes. It also contains a 'PDF_MALICIOUS_REDIRECTOR_LINK' pointing to 'https://ttraff.ru/pify?keyword=adobe+acrobat+add+digital+signature', which is a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a phishing or scam attempt to harvest credentials or financial information.

Heuristics 4

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=adobe+acrobat+add+digital+signature
    • http://wusos.ashlynnsboutique.com/uploads/1/3/1/4/131437594/tuganixesifatur.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/donabipuganijikirujib.pdf
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/vuresaserufezuvibev.pdf
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/theories_in_sociology_of_education.pdf
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/fozakijuwixakomof.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/appsc_group_2_previous_papers_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/14595562304.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22537170944.pdf
    • https://cdn.shopify.com/s/files/1/0432/4252/0739/files/sopadavizidonizonaf.pdf
    • https://cdn.shopify.com/s/files/1/0444/8341/2135/files/5-_3_bisectors_in_triangles_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/2206/3515/files/bobby_valention_tell_me.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/puxopuximafexuvokozumofu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/65849012963.pdf
    • https://cdn.shopify.com/s/files/1/0433/9954/4984/files/sugumikakofeziwu.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_off00006d20.bin
e5ce700046cba6d639540958f3f982fe075175e3aae4ba22520c8f99fb6aa80d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D20 5236 bytes
font_01_sfnt_off00007ef6.bin
1f5f9af6f83a9779166ebae17f5d4b661727308d22d24a5f7544ef2ba905a20e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF6 9820 bytes