Malicious PDF — malware analysis report

Static analysis result for SHA-256 b143f7bfced6e24d…

MALICIOUS

PDF

45.0 KB Created: 2020-10-01 20:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 44716378b79d38a9fb1522a765a06011 SHA-1: 7f8b16241e6ba44c3b40dc07c79239f34955ebd2 SHA-256: b143f7bfced6e24deeca9eb3f3ff771afa631422431a3ca766a106942eb81fd9
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/strik?keyword=blount+disease+pdf In PDF document text
    • http://files.writersanctuary.net/uploads/1/3/1/4/131437394/e3f20d.pdfIn PDF document text
    • http://zawow.dojgameshq.com/uploads/1/3/1/3/131384635/fokedonixox_vanularikinuger_rumesupoge.pdfIn PDF document text
    • http://files.drjesalva.com/uploads/1/3/1/0/131070526/321ae60accf.pdfIn PDF document text
    • http://xujemewo.theloganbrothers.com/uploads/1/3/1/4/131483067/palowe.pdfIn PDF document text
    • http://fulatevaw.singtamlee.com/uploads/1/3/0/7/130739113/begaranoniwegeli.pdfIn PDF document text
    • http://doselofe.mountaintechnicalsolutions.com/uploads/1/3/2/6/132696067/437f979bba74698.pdfIn PDF document text
    • http://visanisi.tyburke.net/uploads/1/3/2/3/132303163/ninokelapovagaj-topaza.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/25925991231.pdfIn PDF document text
    • https://site-1037138.mozfiles.com/files/1037138/gatifujexisibi.pdfIn PDF document text
    • https://site-1039612.mozfiles.com/files/1039612/71388376289.pdfIn PDF document text
    • https://site-1039514.mozfiles.com/files/1039514/watidiguvuresuwamobomi.pdfIn PDF document text
    • https://site-1038720.mozfiles.com/files/1038720/gononerasidej.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/ed4e752f-b3fa-4320-bbcb-a3fa65220b55/loduragolojom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5deef3c8-9307-44b9-ab88-8941aef697af/navedupagapiponew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23bbc3b9-166b-47cc-a888-0095a52e470d/37498277047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1bd0b2-6c39-486e-9155-6b1b070b0cb7/81974195843.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_off0000732c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732C 4988 bytes
SHA-256: 1ef823ef942b3bc04de0d842b6c339eaf45da295316fba51c1f7c329dfef8e1c
font_01_sfnt_off00008440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8440 10176 bytes
SHA-256: 802a0ebed791798b77e0be65d2dbbeb279d4e84448d4a32fdc5fcf49a96baf44

Open this report in the interactive analyzer, or submit your own file for analysis.