Malicious PDF — malware analysis report

Static analysis result for SHA-256 6200e7ddcdac8c6d…

MALICIOUS

PDF

81.7 KB Created: 2021-06-01 05:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a57317779e2e3d740f53294afe9c4830 SHA-1: feeeed18be1b14cf7547a8508113f87dfed53646 SHA-256: 6200e7ddcdac8c6d085d03f02d34d2602e079fa67e6a4bdf349ca7a8393388c1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to disposable domains and employing UTM parameters, indicative of a link farm or phishing campaign. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or scamming operations. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cructi.ru/pbw?utm_term=peppered+moth+lab+answers PDF link annotation
    • https://nubegajal.weebly.com/uploads/1/3/4/6/134668927/8b74d2d7a9b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367312/normal_5fedc6f4b768e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463809/normal_60028c776da0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470679/normal_60179f444afd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_606095dc1dfcb.pdfIn PDF document text
    • https://tototatinup.weebly.com/uploads/1/3/4/3/134332383/d7d4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477615/normal_60474091ed651.pdfIn PDF document text
    • https://faxulifil.weebly.com/uploads/1/3/4/7/134731484/sulajewup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406809/normal_60261f0ccc35f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369651/normal_5feb7680ce49c.pdfIn PDF document text
    • https://tedinuvade.weebly.com/uploads/1/3/4/3/134348171/1799132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393362/normal_60235697b19d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447433/normal_5fed7f910ff06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fevosezew.pbworks.com/f/tusosevawemabamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8c68341-b08a-47f6-8222-d52a87250c1c/lotitatuwonojoramuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1688950a-a5c7-4f68-8ac5-7fc3a2a59125/makemiwitupano.pdfIn PDF document text
    • http://xalomuzavege.pbworks.com/f/97997849887.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/f/12147036477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37b0f560-ed48-4361-b30a-39e84dccc531/20_creative_diy_project_ideas.pdfIn PDF document text
    • http://mefijunov.pbworks.com/w/file/fetch/144419436/35090846562.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c621b311-3c8d-4fa2-9065-a35e2653aaad/libros_la_meta_completos_gratis_espaol.pdfIn PDF document text
    • http://nilanom.pbworks.com/f/wadazopobugixepabisali.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_off000102de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DE 5432 bytes
SHA-256: 2489f5da994d46c573c09bdd89267dcf6156eeac84fca80bb50fd4a0a76649cb
font_01_sfnt_off0001152a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1152A 10616 bytes
SHA-256: 254f0abeee815be7eb7bfe1de39db006443a7694b8bcf0bf3174bc0d0fbba1dd

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