Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e87d01504e9d8c…

MALICIOUS

PDF

41.4 KB Created: 2020-10-03 11:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 96b0aa690c13d2448c049327e1dac5fa SHA-1: a2673ad6544921568cea52ee533478427a6edec7 SHA-256: c6e87d01504e9d8ca4806630b6b70724b9d288c4efc17086bb12ac8458cd68e6
172 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=need+for+speed+most+wanted+download+full+version In PDF document text
    • http://files.fandrlive.com/uploads/1/3/1/6/131636697/170626.pdfIn PDF document text
    • http://files.regencywestduplex.com/uploads/1/3/1/3/131381804/folago.pdfIn PDF document text
    • http://makuzo.tattnall4h.org/uploads/1/3/1/8/131857334/8869713.pdfIn PDF document text
    • http://files.bgcjcga.org/uploads/1/3/1/4/131408103/96e2f994.pdfIn PDF document text
    • http://files.lusage.org/uploads/1/3/0/8/130814783/e2560963f.pdfIn PDF document text
    • http://files.gardenerscirclewa.com/uploads/1/3/1/4/131437091/wasam.pdfIn PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/10863225722.pdfIn PDF document text
    • https://site-1039898.mozfiles.com/files/1039898/dajikujuwusibuxav.pdfIn PDF document text
    • https://site-1037086.mozfiles.com/files/1037086/rogajiri.pdfIn PDF document text
    • https://site-1037177.mozfiles.com/files/1037177/44566452140.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/bb26be64-2924-4040-9e22-b2c212e7e469/30765566778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d16cf7b0-8d47-43d5-9c1a-b9d2cc895db5/wemisogojapizuniro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88c7ed1d-af73-48d9-9bcf-943d5141f20a/19547785192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a13549b7-48fc-400f-a41f-16af20342726/26365713549.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_off0000639c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639C 5308 bytes
SHA-256: fe2f9c921c0a2800d5d388f6aa4e0886e607a9d5c94d1dcc23bac83e5c950946
font_01_sfnt_off000075b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B2 10268 bytes
SHA-256: 6cc63668e3a998e03a10771170979cefb13bb20a5670867fbd9c3a8f4ccf5cf0