Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35ae7214c841757…

MALICIOUS

PDF

71.0 KB Created: 2020-11-11 10:46:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 9b1e3032a3bbeee10daac0a9952b5c5a SHA-1: 038ad5df195574e68dbe42dfe937ef147c6563d1 SHA-256: e35ae7214c841757f2bcfd628854fd91e4d86b2dd268be794fdcc0cc497ed211
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/wb?keyword=ugg%20sizing%20guide PDF link annotation
    • https://lagafuxomip.weebly.com/uploads/1/3/4/3/134347440/ridofapixo.pdfIn PDF document text
    • https://diminulagiv.weebly.com/uploads/1/3/4/4/134489960/muwexige_ritupunururow_teporirof_taronu.pdfIn PDF document text
    • https://vemewibikem.weebly.com/uploads/1/3/0/7/130776349/sewovigulasonelipeb.pdfIn PDF document text
    • https://nopubekekav.weebly.com/uploads/1/3/4/5/134511336/217d280beda.pdfIn PDF document text
    • https://vofixerexelisat.weebly.com/uploads/1/3/4/3/134311693/ce39c8c0f1b994.pdfIn PDF document text
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/60aa5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jevuxozazebazug/ender_zoo_owl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25b013b5-4248-434b-b3c6-089f1778ec05/1252107742.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edd66790-c71e-4ae2-a78c-83573e7a1d91/fondy_unblocked_games_coffee_shop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be678cc3-b018-41b2-89a1-a53a15fcd398/xobotujetimani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85791f9c-0229-443f-84b4-a8b75f4bb490/zisokeserawegomesebur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d44a4079-85c6-45c1-bc21-37dcdd67924c/tevewaxezuzizonodovewib.pdfIn PDF document text
    • https://s3.amazonaws.com/wisatutadi/new_grad_er_nurse_cover_letter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8fb7117-6260-4035-888f-13f2e3f3497f/kafumin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a78cdfd-3488-4c30-8c9b-bda51c4d228b/malukubuzewenikisusadot.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_off0000d717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD717 4696 bytes
SHA-256: a6a2172cf4b46a83c9b42e5b2e788329983362ea10ce71836c8c167d2aa85005
font_01_sfnt_off0000e738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE738 11340 bytes
SHA-256: a139e7d23b00edcacd2cd71f5d641255ae76cbe03f3c2a389248e97438646af1

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