Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c1078e9548e03d4…

MALICIOUS

PDF

58.3 KB Created: 2020-08-09 09:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d51b647dfe046b191bdfbb60398983db SHA-1: 9159d6d70f9bf49e64eff616f17a5f5cbe0da918 SHA-256: 5c1078e9548e03d4f48035573cdab5ea7b686fca46fad1a84c265c19234f2606
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same URL. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the primary malicious activity appears to be redirecting users to a harmful site.

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.com/pify?keyword=anlauttabelle+bayern+pdf
    • http://files.christian-marriage-counselling.com/uploads/1/3/0/9/130969742/2095671.pdf
    • http://files.loganbrady2019.com/uploads/1/3/1/4/131407647/soxefokifaliv.pdf
    • http://files.epvballoons.com/uploads/1/3/0/7/130739309/radotonu-jedolofi-rixupojulir.pdf
    • http://files.628threads.com/uploads/1/3/1/3/131381614/lokorubemedir.pdf
    • http://files.earthstarweb.com/uploads/1/3/0/7/130739275/sidulax-tanakezugeneso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/8729/8714/files/31575899335.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/48441657224.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/mamabowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2863/4010/files/nelabigoboxonosozo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1628/9442/files/44846873947.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6314/files/jobojixega.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/tilixexedozubuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5203/9328/files/nufevumuturivol.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/jegeresudu.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_off00009850.bin
e5ef2b3e9132e6ad12ccc35f3caa9fcf3ccb576799632f2a367bc7f723bf402f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9850 4812 bytes
font_01_sfnt_off0000a8b1.bin
8a66ac8c6a5e7db605c86f0787d37cbd5284d6a6889459645fa4456c39b35654		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B1 11496 bytes
font_02_sfnt_off0000ce30.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE30 4324 bytes

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