Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84eee536490d24f…

MALICIOUS

PDF

44.5 KB Created: 2020-08-25 10:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 190bc24bb4237234f1f274ec502f1b0e SHA-1: 5d108f0ef9fcaf079789148034fa24dd1e7b3106 SHA-256: d84eee536490d24fde7d852c1eba9dda01762227ca8770e4b8a5e0633580dbdc
152 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 a PDF link farm behavior, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary intent appears to be redirecting users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=dashboard+in+power+bi+report
    • http://tiveja.bronxbrooklynqueenshalls.com/uploads/1/3/0/7/130739835/miluzimegekar.pdf
    • http://zepozokev.georgiadavisdressage.com/uploads/1/3/1/0/131070450/48b1eeb6f21de99.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/lakexezilorolexamizunidur.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/68451591972.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/mupozuvajalowelagekagowe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/t_shirt_design_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0430/3886/7607/files/68893554837.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/wikuluvune.pdf
    • https://cdn.shopify.com/s/files/1/0435/5578/2817/files/bscs_biology_a_molecular_approach.pdf
    • https://cdn.shopify.com/s/files/1/0461/8148/2649/files/california_dreaming_choir_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0457/7401/2582/files/vonafovamesivomano.pdf
    • https://cdn.shopify.com/s/files/1/0428/7778/0134/files/buku_surat_yasin_dan_tahlil.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/41648345193.pdf
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/47458066846.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/
    • https://cdn.shopify.com/s/files/1/0461/8148/2649/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aba.bin
62af3002ffacf83372afc5b870c56abb3f21ce73792fe40b23bbe038a66900d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABA 5248 bytes
font_01_sfnt_off00007c93.bin
6d0a6015ddce0000a362058254c2694e9b9bef7250c671a9fc7109bab3a09185
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C93 12624 bytes