Malicious PDF — malware analysis report

Static analysis result for SHA-256 369f287079c17370…

MALICIOUS

PDF

44.2 KB Created: 2020-11-04 22:34:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b258d6af2199f1999609717d321072ba SHA-1: 75c5c935b252b396bd09a25d22d8c6a3fee7145a SHA-256: 369f287079c173708c3ecb70b45df992188a9538cea438394f80e954aee1f20e
184 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically advertising 'Gta 4 apk download for android'. The primary redirector URL is https://ttraff.link/123?keyword=gta+4+apk+download+for+android, which likely leads to further malicious content or malware. The document body and embedded links strongly suggest a phishing or scam attempt to lure victims through fake download offers.

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/123?keyword=gta+4+apk+download+for+android In PDF document text
    • https://relogeseji.weebly.com/uploads/1/3/0/7/130739887/dipinegizibif.pdfIn PDF document text
    • https://gamorajemusuro.weebly.com/uploads/1/3/4/3/134316050/3d3b7af.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/decaa6f6.pdfIn PDF document text
    • https://mitegasur.weebly.com/uploads/1/3/1/8/131871816/f420006b859f.pdfIn PDF document text
    • https://bekonerotukabi.weebly.com/uploads/1/3/4/3/134366377/limivekakoge-zijewab-sijetamopazef-gemidusagowexi.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/kixivejil-wadomovuvuw-babajemibaw.pdfIn PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/jopesiked.pdfIn PDF document text
    • https://dugilosokufaku.weebly.com/uploads/1/3/4/6/134610324/6402264.pdfIn PDF document text
    • https://zomurudol.weebly.com/uploads/1/3/4/4/134492975/madekul-xexakezemuju-sedutidi-zidimiximirim.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/vuxaka.pdfIn PDF document text
    • https://litazivufili.weebly.com/uploads/1/3/4/3/134305244/togapusim.pdfIn PDF document text
    • https://madovokego.weebly.com/uploads/1/3/1/4/131409717/jimosoxobemapel-dupen-paxipakokan-dufewovojides.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/voranipekaloxuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/37a129b9-7cc2-4211-bc61-136f95a80d15/39639085117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fa52090-de00-498b-929e-bed77952c875/94468360071.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_off00006619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6619 5132 bytes
SHA-256: c549055237ae998a1d7b99517d8401ab4a3b26a3d8cb23853e0d328d50b11e24
font_01_sfnt_off000077c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C4 13836 bytes
SHA-256: fc33dd2a503eb48e9b9bea56a1123805dc7d8d940bea564c3cae52051aed53bd

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