Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2d6ab9b28293ba0…

MALICIOUS

PDF

57.3 KB Created: 2020-09-17 08:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e050db2b183db5fc97b8c15e87b8099 SHA-1: a622466441187a3892a8536757e7c970f8b07c9d SHA-256: d2d6ab9b28293ba047b292b41edb04f10eb8d7f6a5140648e881f0243d304086
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically a URL designed to lure users with a keyword search. The document body, though heavily obfuscated, appears to contain the same lure URL. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.club/wix?keyword=advanced+accounting+solutions+manual
    • http://koxul.jilliverstravels.com/uploads/1/3/1/1/131164243/8282551.pdf
    • http://sidiko.rickywhitemore.co.uk/uploads/1/3/1/6/131606069/5341401.pdf
    • http://fefozitu.christevan.net/uploads/1/3/1/4/131453194/474506.pdf
    • https://ab76a66f-4b75-479f-9bfc-9796d667028a.filesusr.com/ugd/1be480_0dfbc36e492943c8b42b7a785c693ef0.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/jupulatifafiwenaxi.pdf
    • https://cdn.shopify.com/s/files/1/0460/8691/4212/files/6932410327.pdf
    • https://cdn.shopify.com/s/files/1/0433/6975/8874/files/kozopipod.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/alphabet_grec_ancien.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/historia_clinica_psicologica_para_adultos.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/what_tablet_does_shigetora_use.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a81.bin
55fa3b14b73b4096b02edbe576f2d3e8f14d1fd899f242631337acb5b85bdd6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A81 5212 bytes
font_01_sfnt_off0000ac33.bin
de8b67f16e56f4d0ee6e2a1efa6fdb8467566ffa3e8810b0513d86958b56b796		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC33 13900 bytes

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