Malicious PDF — malware analysis report

Static analysis result for SHA-256 9662ebbc13bd779f…

MALICIOUS

PDF

43.5 KB Created: 2020-10-16 15:36:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 357d0f0b046ac4de82bdaa9f2acca163 SHA-1: 65feb62739e6200a09a2dcf92e97cf6963b0d860 SHA-256: 9662ebbc13bd779f05d0c5b7f813cc8374e0e414849db993deedb76e6dc038c3
184 Risk Score

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://ggtraff.ru/123?keyword=pulovere+crosetate+manual+modele In PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/jazulifevalosu.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bamudepekepa_setumazowido.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/3fab47.pdfIn PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/lewozegaxeme_dizojen.pdfIn PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/1687824.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/ff06dfdf.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/xesikoxojakewude.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/lejalapisetuv-nuwofur.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/labuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/34a33b4f-dd82-4e63-a408-0bd408a5b7eb/31903952384.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e35e8c92-0f09-4677-a874-0dc400e9b40b/34591789182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2537852-1d7a-4a79-9015-22a891b62b16/37507841078.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/362e8aa2-1d5c-4a33-b4bc-5879bcafa71c/15697834901.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd815eca-c860-4ded-bae6-ac27fb58ebaa/zozewufonasivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88a303d5-bfaf-4479-b436-01d80f479cc3/56119278217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/648e4020-ef03-4e66-b735-0cbd0275ef49/60102729960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40dc727a-cb03-4e31-8623-5e34ac5dde76/59847724249.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 4980 bytes
SHA-256: 43be6a8df83d1923b7dc76f22ea6325c09afd0c24131f4cec37cec91000ad0f0
font_01_sfnt_off00007146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7146 9904 bytes
SHA-256: 25c49bdf8a4c6a147001ed3cc32263915b8d9b7bab1ca7f1925fb5ffe939d744
font_02_sfnt_off000092e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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