Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e339840e3d7e14b…

MALICIOUS

PDF

46.6 KB Created: 2020-08-24 00:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82eb0d93f0ac5ccdee8d3786e44a3229 SHA-1: 73fe32cba61ed0ed1d9db48131bc88a2a5ca175d SHA-256: 0e339840e3d7e14b40aa35b09374b60e5f1d7d941c16dc494ea143960bdab940
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains embedded links that point to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Dbz bio android name generator' and includes the malicious URL. The presence of numerous links, many pointing to Shopify domains hosting PDFs, suggests a link farm or SEO manipulation tactic to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=dbz+bio+android+name+generator
    • http://bijonex.davenportband.com/uploads/1/3/1/4/131407406/wusekamixujuza.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/14900729688.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/sanelokuzi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6230/files/jabukal.pdf
    • https://cdn.shopify.com/s/files/1/0461/4337/3480/files/wonutogomesef.pdf
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/32810751883.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.pdf
    • https://cdn.shopify.com/s/files/1/0433/7539/4977/files/zamuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/libertango_classical_guitar_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2485/files/wings_of_fire_book_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/9020/7139/files/xadorutofuko.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a85.bin
3411c450095b50300469c74cc6c92423628954633613ace49dc2d4fa7852cee0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A85 4056 bytes
font_01_sfnt_off000078da.bin
3696eeeeed17004991e571eb942ff7058bea7db8518904f03dab040c68783529
pdf-font-stream PDF embedded font (sfnt) at offset 0x78DA 5124 bytes
font_02_sfnt_off00008a33.bin
6e5485f0313a6d3e0fdfc784d7bfa2078cb6354bf65f84f73699838bc7685b28
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A33 10308 bytes