Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f2aac06688c03b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-30 16:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34ecbfc404621431844c844a91873c3c SHA-1: 80f2a898f30769a37e577419994ae45ca83398c7 SHA-256: 34f2aac06688c03b593670eb08dcccead9b75ef9a65bcf6e3f99f9109fd51a36
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised with a seemingly innocuous keyword. The document body, though heavily obfuscated, contains the same keyword and a URL pointing to the redirector. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains hosting PDF files, suggesting a broader campaign to distribute malicious content or manipulate search engine results. The ML classifier strongly indicated maliciousness.

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.cc/wix?keyword=friends+trivia+board+game+rules
    • https://cdn.shopify.com/s/files/1/0429/5963/4585/files/abu_taher_misbah_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/army_leave_form_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8775/files/53105272168.pdf
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/haloalkanes_ncert_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0437/9115/5361/files/badlapur_film_songs_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0924/files/47850045457.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/tusafod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tiwimuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/jodij.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_off000067e4.bin
85e8f245393282d9e4d85f83dd0b4e2d90e3ebe0fa6d30495f717c9895f88880		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E4 5300 bytes
font_01_sfnt_off000079d0.bin
62a57b805014e6e5ee304c749f01b995987f6fbd52f361aaddf254b88acd2eb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79D0 10412 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.