Malicious PDF — malware analysis report

Static analysis result for SHA-256 6413abf0267374be…

MALICIOUS

PDF

50.6 KB Created: 2020-08-12 21:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 652a83837329e7f7629913bf71ed5445 SHA-1: c0487af10b9690d26d221a91a35cacffbd411cb8 SHA-256: 6413abf0267374be82526111d34d7f3d2b1b99d9eb0cce31ab9744affc910d1c
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=angular+7+documentation+pdf', which is also flagged as a malicious redirector. This suggests the primary goal is to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=angular+7+documentation+pdf
    • http://siradeken.rootsdesignco.com/uploads/1/3/0/8/130874050/3963549.pdf
    • http://files.vitalhealthwoodstock.com/uploads/1/3/2/6/132681586/nunovos.pdf
    • http://files.mycorporateteambuilding.com/uploads/1/3/2/3/132302978/68c5c659.pdf
    • http://files.pitbullleatherwork.com/uploads/1/3/0/9/130969446/vowutasivuwo-famat-rotuvusi-fifosukuxabixev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/bijevezireta.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/arquitectura_moderna_desde_1900_curtis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/44531942380.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gerakofidasetivivirodipel.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3951/files/73162870947.pdf
    • https://cdn.shopify.com/s/files/1/0437/0622/0697/files/bojedibegofegexevinifefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/5994/files/kojenipidatole.pdf
    • https://cdn.shopify.com/s/files/1/0433/3997/2773/files/bmw_n52_engine.pdf
    • https://cdn.shopify.com/s/files/1/0431/8786/3715/files/perimeter_and_area_of_plane_figures_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/kojukuwuxogatazep.pdf
    • https://cdn.shopify.com/s/files/1/0428/7492/9319/files/97663326479.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/29079363256.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_off00008445.bin
b042d70e3a01ea59661e5a49d1be27e957158dc45b20e0f6b8a603abdbc502b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8445 5368 bytes
font_01_sfnt_off00009675.bin
dde30ebf22de66ae7f1ffe4f4ec59431ea4d3f8ecdb67c90cf424797d837035b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9675 11364 bytes

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