Malicious PDF — malware analysis report

Static analysis result for SHA-256 05978135f5da0f7f…

MALICIOUS

PDF

33.8 KB Created: 2020-08-26 16:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dae75043b2c34ccd0e7be4a87bbe8fbc SHA-1: eca8bacc017f3c8836d881d38f7d3771a65e7a7b SHA-256: 05978135f5da0f7fe4176135d22d31ec7962c0ceddad63628ef799d3cc66d56c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The primary malicious URL identified is ttraff.ru, which is flagged as a redirector. The document body, though heavily obfuscated, contains text related to game emulation and also includes the malicious URL, suggesting a lure to download content from malicious sites. The presence of numerous PDF links and a critical redirector firing strongly indicates a malicious intent to redirect users to harmful infrastructure.

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=yu+gi+oh+forbidden+memories+ps1+emulator+download
    • http://rolexunog.chmsib.com/uploads/1/3/0/9/130969186/ranesuxesigux.pdf
    • http://radame.greenstonedesign.co.uk/uploads/1/3/1/4/131406592/6261220.pdf
    • http://padid.mcswa-wv.com/uploads/1/3/2/8/132814930/9338828.pdf
    • http://files.gildercollegeconsulting.org/uploads/1/3/0/7/130775446/tuxepe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/gezapup.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/bucket_list_movie_song_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/82629684630.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4668/files/apneia_do_sono_tratamento.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/wikigani.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sezam.pdf
    • https://cdn.shopify.com/s/files/1/0431/4244/7261/files/21933902181.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/62896904159.pdf
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/21439572682.pdf
    • https://cdn.shopify.com/s/files/1/0433/0091/3310/files/85350582825.pdf
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/20022604236.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_off000045de.bin
53d18a9b48ede0e2f090a51c9ddc63bb126cc89bb1a706daf1b3e4ec100f6bab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45DE 5700 bytes
font_01_sfnt_off0000592c.bin
dca535a91359f0c3dd5aa50b5ba18ffb2d7d8997a2037165f790fee4b25e98a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x592C 9656 bytes

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