Malicious PDF — malware analysis report

Static analysis result for SHA-256 6315b32662d50528…

MALICIOUS

PDF

69.8 KB Created: 2020-08-30 12:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ae4015842a01a680ab89d7f8f07cbf2 SHA-1: 71a1951ced57005e798e99fb7072a82c0541227e SHA-256: 6315b32662d50528d6fb33fd6ec798f1f199f68bd3829731b1e7aefc8eab0ed1
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.ru'. The document body, though heavily obfuscated, contains text related to song downloads, suggesting a lure. The presence of numerous embedded links, many pointing to benign files but one critical one to a malicious domain, indicates a link farm or redirection scheme designed to lead 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.ru/wix?keyword=khiladi+786+songs+download+mp3+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/299074_fce5f9a2921b4225b970ff2000f3cb30.pdf
    • https://static.usrfiles.com/ugd/b8c837_e04cfbe82eb043ddbcb5868b31569016.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc3593a299b44a2798f240f0b686a572.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed481e365fe14dfeaff2dc8beb507651.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0675/files/gixujemuzafegutosawixu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2995/2674/files/60085777193.pdf
    • https://cdn.shopify.com/s/files/1/0431/6371/3695/files/53527819182.pdf
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/sbi_bank_pass_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/9398/9278/files/janapada_geete_audio_songs_ing.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/16467834181.pdf
    • https://cdn.shopify.com/s/files/1/0437/2260/4695/files/jaguxusarisetuxadaxed.pdf
    • https://cdn.shopify.com/s/files/1/0435/1882/0511/files/2007_honda_fit_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/3201/7058/files/67664246954.pdf
    • https://cdn.shopify.com/s/files/1/0439/1570/6523/files/nacho_barbie_girl_song_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0433/3538/5243/files/tuxakagutizukobibat.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1268/files/44239878887.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_off0000c5d0.bin
98c2d583314127dcb895726ff10a0506da95f8d0d4a031446189968e5d30e400		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D0 6108 bytes
font_01_sfnt_off0000da77.bin
825708a64ffb78833077dfe179e6c16f441adeff4a1f56b06016fde36fb0e7dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA77 15064 bytes

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