Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a94e13d8ffd22c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-08 03:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abe2c108a819b4e497086da2c51a0601 SHA-1: dcdb98562c7e774c7c3791cc737ec34ccc0c67dd SHA-256: 62a94e13d8ffd22c670eddd5bbb2e262abe2969b97b99514eae622602c6ec1eb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL and other links that appear to be part of a link farm designed to attract traffic.

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.ru/pify?keyword=contemporary+approaches+to+leadership+pdf
    • http://files.jeremybroussardlpc.com/uploads/1/3/0/7/130739039/8abf35c.pdf
    • http://runugebe.cherrycityfarms.com/uploads/1/3/0/7/130740316/5924651.pdf
    • http://files.studiofiza.com/uploads/1/3/0/9/130969389/nexozizi_rakadorogem_tatexozegegoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/4845/9670/files/vemerezowusivufoga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/o_que__energia_renovavel.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0082/files/14719544964.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/agricultural_marketing_functions.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/worarisolezuwisanefure.pdf
    • https://cdn.shopify.com/s/files/1/0433/9177/8965/files/towotatogirasesuxemawuxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/kazujojuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/80399640526.pdf
    • https://cdn.shopify.com/s/files/1/0432/8515/1897/files/marezewijezefo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/22462585194.pdf
    • https://cdn.shopify.com/s/files/1/0434/2572/6625/files/wodix.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/weight_training_routines.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/42196979780.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/40k_8th_edition_daemons_codex.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_off0000698d.bin
abeefc311ef13b7afae0fd26edf02125aa09fb646f145200400c89f471705ee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x698D 5404 bytes
font_01_sfnt_off00007bc3.bin
b2a263f9875d830f8ff51f81c350103a040781eba5323f6fb8c94f74da461bf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC3 10456 bytes

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