Malicious PDF — malware analysis report

Static analysis result for SHA-256 514aae33c5eb6a97…

MALICIOUS

PDF

37.2 KB Created: 2020-11-05 16:32:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 38620e2928b7ba69c6a01bc9e26b7648 SHA-1: a910fa38a5a51c341d7b200453d2614eccaaf1ad SHA-256: 514aae33c5eb6a97770dddac54fe3959ed406197afb8f66a02a4140af82b2f7d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=geometry+unit+1+review+answer+key PDF link annotation
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/52cece19e18.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/7533635.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/d168944e22ef23b.pdfIn PDF document text
    • https://dijizuwuke.weebly.com/uploads/1/3/3/9/133999270/ranuw-razoviguv-volebonutop-vefosubagetafem.pdfIn PDF document text
    • https://xuxavapivobe.weebly.com/uploads/1/3/4/5/134590147/lusow.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/tagerezupubiji.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/rakariz-tesamodoluzara-rurefef.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/pujikikufagewo-fajeguxefozu-jinijobelojuzu.pdfIn PDF document text
    • https://rixidagetowema.weebly.com/uploads/1/3/4/6/134612143/bilukowatopu_poxili_robozamupi.pdfIn PDF document text
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/tepixobopejo-rofomalokip-dotulo.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/8db0d82a-12fe-424c-804c-2c504d3c371e/dabipepigaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8252cf5a-8a70-4f9e-8995-c1df7c3f72b4/fubuxuzumukinovetob.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/81240766698.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/583f271f-b9f2-48da-8cac-80b0997260fb/16806934405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37e92dbf-7bcf-4290-adfa-277c0f75f1ad/jixemovot.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_off00005183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5183 5200 bytes
SHA-256: 147da5fa51a014ec109c3ba1c4c3ec853257fee77cc3337dab1cd41e0483f442
font_01_sfnt_off0000633d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633D 10828 bytes
SHA-256: d04e0cb6795f86f0fed0bc233ad9a970d4f7249dc5c4b9c0e3c0e4dde34bf82a

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