Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e26369ba0f2c14…

MALICIOUS

PDF

39.6 KB Created: 2020-09-18 14:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57c3579059ee0dce56b308565f7e1107 SHA-1: 39ef2b31878171c4e1fa0f3d1b47376d70ee6765 SHA-256: 60e26369ba0f2c144c89bf5a1fff221adf8888d1d196401a0a55e0901de5b83d
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to suspicious domains and are flagged as malicious redirectors or part of a link farm. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector link found in the heuristics. This suggests the document's primary purpose is to drive traffic to malicious infrastructure, likely for SEO spam or to facilitate further phishing or malware delivery.

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.club/wix?keyword=mechanical+engineering+reference+manual+13th+edition+pdf
    • http://tavub.agatepierandswimclub.com/uploads/1/3/1/3/131380729/voxomatibu-zupekepuw-widolulon-zuratodominupil.pdf
    • http://xepap.lochfieldprimary.com/uploads/1/3/0/7/130738748/7b641a4d.pdf
    • http://bixivifav.kahurangiwalks.co.nz/uploads/1/3/0/7/130740592/zajukakuwebexi.pdf
    • http://somazi.screenplaysandartbymichael.com/uploads/1/3/1/3/131378779/wifana.pdf
    • http://jefixi.thebackpew.com/uploads/1/3/2/3/132303382/xarexe-jiwifasu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/95622590851.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/11769904714.pdf
    • https://26b916bc-27a1-413e-933b-09db8b8b9c38.filesusr.com/ugd/edb4a7_9dc47ed1359044e597f54a3a9bb90663.pdf?index=true
    • https://f9c1333f-2166-4e4b-91dd-9d8aaf38a441.filesusr.com/ugd/de65f7_caca18d839984bc6ba2c9837dd1df7ce.pdf?index=true
    • https://85b98069-e091-4946-99b2-0c81bf304059.filesusr.com/ugd/7836c9_2431d7d7b1774096a28a151e3c32d85d.pdf?index=true
    • https://43fa64a3-d878-42a7-a983-b6a6ad8dca1b.filesusr.com/ugd/d61b30_bf8098f45aab4efa9d9486d1f1eb9b37.pdf?index=true
    • https://82f6b076-98f9-4df9-baa2-431d50fde17b.filesusr.com/ugd/906e9f_1ed32cd2079e4683b7cff5cb93c402a3.pdf?index=true
    • https://78f804bc-6626-4fdf-b11b-6ba01f1112a4.filesusr.com/ugd/3fc21f_eb8dc4012238472ab66cd09bc14b500a.pdf?index=true
    • https://7f41efef-3f92-453c-a779-9615815bc4bf.filesusr.com/ugd/27135d_39f64709f9f9493398f07eb810007c94.pdf?index=true
    • https://a7fe6561-ff6b-4999-b239-7e02002908f0.filesusr.com/ugd/2d797c_f9b92af6456f4601a58429cd792f53ad.pdf?index=true
    • 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_off00005aa5.bin
a392f811f2f7effd415a6e2ab658cb4ef4f349083231da5e2691f6e3022780f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA5 5612 bytes
font_01_sfnt_off00006daa.bin
c080d13e71812744a11ad14d70777ff5f3b12a0800ff66d3b0429d8799436cac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAA 10420 bytes

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