Malicious PDF — malware analysis report

Static analysis result for SHA-256 860da635132d76f9…

MALICIOUS

PDF

47.2 KB Created: 2020-08-09 23:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3b53a0b1477ed19d92a851b08b56123 SHA-1: 8daa7e5c3f80b20ea5e54ae88bec161abf980739 SHA-256: 860da635132d76f96f6ce749896957d2d79f7038b2bbb0fc6da41dc847288464
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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many of which are to Shopify domains hosting PDF files. The document body, though heavily obfuscated, contains the same malicious URL and references to PDF guides, reinforcing the lure. The primary malicious URL is 'https://ttraff.com/pify?keyword=the+meat+buyer+s+guide+pdf+free'.

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.com/pify?keyword=the+meat+buyer+s+guide+pdf+free
    • http://files.oswegoeastmusic.org/uploads/1/3/0/9/130970003/mitadexamofubut_dabisewavotozis_rivowopi.pdf
    • http://kexapidim.tillylunken.com/uploads/1/3/1/6/131607163/ginos.pdf
    • http://xikoxox.paulayersart.studio/uploads/1/3/1/4/131453109/xerobufeli-zisexe.pdf
    • https://cdn.shopify.com/s/files/1/0436/1804/2018/files/71276004610.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/42112367643.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7255/files/8928182753.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/function_of_animal_cell_organelles.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/zamasalufapovobajipatuzox.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/kakadafo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/renipafutixanolefara.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/15808570735.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/wordly_wise_3000_book_6_lesson_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0605/files/xugivisawixobizu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/jatixokamipalufejivogiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/95852212568.pdf
    • https://cdn.shopify.com/s/files/1/0432/3521/3467/files/xugizijoxawufawodemezum.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_off00007927.bin
bbcea787c19b7bf08467e5cda8a6679ba0cd0d0fd73af6dcb18a5bf2f135967f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7927 5612 bytes
font_01_sfnt_off00008c0f.bin
9b94d9f2e7b3d556624054c81538edec0c426b4423af9ea22ed9448ec771b3e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0F 10456 bytes