Malicious PDF — malware analysis report

Static analysis result for SHA-256 093dabda3f43ecb6…

MALICIOUS

PDF

36.8 KB Created: 2020-09-18 23:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e260add3498a9cbaa52999404ef6cc4 SHA-1: e357c3b1ee5a3578b65c4c1892c19ca591647a1f SHA-256: 093dabda3f43ecb63ad3a9f865abf7c499e2a665e8871a610368060ed1d8d0f4
154 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service designed to obscure the final destination. The primary malicious link, 'https://ttraff.me/wix?keyword=glee+season+5+episode+3+free+online', suggests a lure for pirated media content. The ML classifier strongly indicated maliciousness, and the PDF structure itself is indicative of a link farm used for SEO poisoning or malicious redirection.

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.me/wix?keyword=glee+season+5+episode+3+free+online
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://148f9feb-08a7-4d0b-a0e2-ffceadc37ccb.filesusr.com/ugd/f0f215_776418cfdedc432e9d4621a99b015b26.pdf?index=true
    • https://38e27bc5-aa3d-4021-b0e9-63c26d7e83d1.filesusr.com/ugd/4ae4db_e79e09ad1f83485f833d7763895759ec.pdf?index=true
    • https://b9022633-4b2b-4fa0-abbb-f5f74764edb8.filesusr.com/ugd/9d869b_1165855297c04df0810056dceb8ddaaf.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0439/1269/1867/files/wozidununisujibo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/addition_and_subtraction_of_decimals_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0481/1862/8505/files/mp_online_b._ed_application_form_2019.pdf
    • https://25288109-3767-4256-9d22-fedcf89c1ee6.filesusr.com/ugd/2eec94_eed5958a4dc94ae18ffbba84deb05e15.pdf?index=true
    • https://b3a3ddf4-d54d-4dde-8053-0e8cfa54bfdb.filesusr.com/ugd/f80014_7ba9b3d0fcac4d569b10d4b770e3780b.pdf?index=true
    • https://6f331625-9e75-445f-bfe6-4865e2f4e51a.filesusr.com/ugd/5c8b2f_4923f1fc525444b7907095b16ab6aeeb.pdf?index=true
    • https://726525ce-668c-4264-9ca5-9a896adc6214.filesusr.com/ugd/0b46e6_379d74a7023b4526a833993cfabc0e46.pdf?index=true
    • https://dfae3920-5cb6-4445-9021-1c55d949ee10.filesusr.com/ugd/1813b3_0dd5f71bed2e4b17a41379efdbbde2a1.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0485/6607/5552/files/the_green_pharmacy_guide_to_healing_foods.pdf
    • https://cdn.shopify.com/s/files/1/0459/1216/2453/files/16126883873.pdf
    • https://cdn.shopify.com/s/files/1/0439/4647/5675/files/73595369495.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/92571463734.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_off00004f30.bin
75b28173b67980a8b2a2b0b7055f460c38e2c2181dffe576490a119f0f788391		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F30 5352 bytes
font_01_sfnt_off00006180.bin
c7dd98029f1aacc1140c0ac015cabb5970dfc02d2899ba11b9926234994a2371		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 10268 bytes

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