Malicious PDF — malware analysis report

Static analysis result for SHA-256 568d7ce1f5b2a212…

MALICIOUS

PDF

43.3 KB Created: 2020-10-08 20:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3be185c86eb9efa76729a827d6a4ca53 SHA-1: 7dafec1c9bbb9488098ca83042bdf4e75882ee1e SHA-256: 568d7ce1f5b2a212908a5c7ae65047f64223ce79ba6cdf931ef8254ad3819bff
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to disposable hosting, and one specific link to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Mark greaney gray man order' and the malicious redirector URL, suggesting a lure to trick users into clicking through to potentially malicious content. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/pify?keyword=mark+greaney+gray+man+order In PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/33446741348.pdfIn PDF document text
    • https://site-1036962.mozfiles.com/files/1036962/mixesezatonore.pdfIn PDF document text
    • https://site-1039725.mozfiles.com/files/1039725/lilemob.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/siridurorodugel.pdfIn PDF document text
    • https://site-1037059.mozfiles.com/files/1037059/vegajubadesusavonivaj.pdfIn PDF document text
    • http://files.kypdx.org/uploads/1/3/0/7/130739895/05151fe7c.pdfIn PDF document text
    • http://jifusiza.caninemannerscpt.com/uploads/1/3/0/8/130873990/biramevo.pdfIn PDF document text
    • http://files.enlightenedheartoc.com/uploads/1/3/0/9/130969526/9419059.pdfIn PDF document text
    • http://files.buybendhomes.com/uploads/1/3/2/6/132681150/suwoladutexewid.pdfIn PDF document text
    • http://sebefuw.tacticalmitigation.com/uploads/1/3/0/8/130814769/titerugam.pdfIn PDF document text
    • http://gimedax.hhseyeofthestorm.org/uploads/1/3/1/0/131069934/5038017.pdfIn PDF document text
    • http://wiwole.panthersnowco.com/uploads/1/3/1/0/131069910/nazepiluxukirig-giwoguf-zodezoxitefiwe-mebafujewew.pdfIn PDF document text
    • http://zowanese.odysseyexplorations.com/uploads/1/3/0/7/130775934/8344205.pdfIn PDF document text
    • http://lusebege.rineyvilleoptimist.org/uploads/1/3/1/6/131606469/d85f23.pdfIn PDF document text
    • http://zotebis.diamondavestudios.com/uploads/1/3/2/3/132303410/7901342.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7909/9302/files/46981563070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/8014/0188/files/46887643378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0475/2808/3622/files/15974999293.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C17 5104 bytes
SHA-256: d438e968982233b98dacd1f2f25225628a0f999e83dd5e1510b368b1784a33d8
font_01_sfnt_off00007d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D78 10236 bytes
SHA-256: 1295bc701e19a9b4de214989a3aa1d7883913dd1e5908ae1816d9192b6963b5f

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