Malicious PDF — malware analysis report

Static analysis result for SHA-256 20218f89241cdb05…

MALICIOUS

PDF

40.9 KB Created: 2020-10-25 03:56:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: e6de8f71a2d83b97798a4ceae3113e37 SHA-1: 385ffdf2636c222b87e0405792d77ebccdd6d83f SHA-256: 20218f89241cdb05bc0b98fcc06260029a2c9f78a9bb97625a6421ae0d1f1896
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/aws?keyword=command+prompt+tricks+windows+10+pdf In PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/2137176.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/funotom.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/taketupuwevawevuziv.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdfIn PDF document text
    • https://kerumesuni.weebly.com/uploads/1/3/4/1/134131613/bolunopenuzipitumu.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/lijemodudodu-detuvomatek-bolab.pdfIn PDF document text
    • https://gexirirexov.weebly.com/uploads/1/3/0/8/130874239/7c1401216eb.pdfIn PDF document text
    • https://xizejaselaz.weebly.com/uploads/1/3/4/3/134357450/lepojasijusokawesil.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/gofebojifupun_vibegiwizinob.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/16d45695-9671-4e41-8d8b-0da5a24e3e94/las_almas_de_brandon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fba4484-f003-4673-a66b-e796ca468fde/2521234081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee26b4b2-2914-4679-aa72-310015371bc7/veduladonirinetevafume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d896f61-dd82-44f8-8759-9b9eba17ddb7/24960036173.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab4692e4-a4ee-413d-b0bd-c99ca414ba1b/42056412535.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ccc72f-19fe-40f0-bf58-a34cd1893889/sixawokativonalojideze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b9ba103-4364-48b0-99f7-cbd1e6e763d8/82189984533.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_off000060b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B4 5524 bytes
SHA-256: 9e4f77932a7c79f03100742eddc45c29cc448521b5e332d20533071ed29398b9
font_01_sfnt_off0000737e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737E 10172 bytes
SHA-256: 19e3075439b0c34abd2f54bc3055b325fdead2876b197949872728ee231ca865

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