Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eeb99d365f773f4…

MALICIOUS

PDF

85.1 KB Created: 2020-08-01 21:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea0c88513bf4fff8f510f06d21a97f03 SHA-1: fa253031b335bba1480c07b18dd4b339d7130092 SHA-256: 0eeb99d365f773f41de017385fb38273fa69df7f0273c8378b40b29d3ed8df93
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting an attempt to direct users to malicious content.

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=what%2527+s+on+spike+tv+right+now
    • http://files.iqjointventureholdings.net/uploads/1/3/1/3/131382092/5087052.pdf
    • http://files.visitpresov.com/uploads/1/3/1/3/131384306/12b85598.pdf
    • http://files.i-yes.org/uploads/1/3/2/6/132695813/punezaferuro_toziti_dizuzotedon_kuxejeki.pdf
    • http://files.thefifacorruptionscandal.com/uploads/1/3/1/8/131872087/46810.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/78783928104.pdf
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/wevewatar.pdf
    • https://cdn.shopify.com/s/files/1/0435/2288/3735/files/65068680081.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/12837952816.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/matlab_for_engineers_4th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/34708427349.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/58743559393.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6618/files/67908863553.pdf
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/game_of_thrones_avclub.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/t_mobile_no_credit_check.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/76501951568.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010305.bin
de72afa89f3bb7875a2fae05a36acb47d3e35ca40d6abc8ade8ee71f1e0845af
pdf-font-stream PDF embedded font (sfnt) at offset 0x10305 5312 bytes
font_01_sfnt_off00011535.bin
24e678905845d48e5f9735ce5f99b06fd135afa67f2b790bf066cb81841e73a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x11535 15928 bytes