Malicious PDF — malware analysis report

Static analysis result for SHA-256 244c733fe171b1c6…

MALICIOUS

PDF

72.1 KB Created: 2021-02-24 12:04:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2c7a47ecf6f90fab2443f522eac14707 SHA-1: 326bdd3cc016fdcc51911e86b2e007509d0ee213 SHA-256: 244c733fe171b1c69c56e31d2dbd73d8647992125458cb148b4bc6c89c695263
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • 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
  • 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://leonvi.ru/wix?keyword=dragon+quest+iii+apk+mod PDF link annotation
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/c8c03e7.pdfIn PDF document text
    • https://jitijukuvag.weebly.com/uploads/1/3/4/7/134743274/f205a.pdfIn PDF document text
    • https://kotuposa.weebly.com/uploads/1/3/1/4/131406283/rigulupeza-bukegowam-mofivivokirov.pdfIn PDF document text
    • https://futokeketoniku.weebly.com/uploads/1/3/5/3/135388466/gavibegud.pdfIn PDF document text
    • https://dofemavuxowag.weebly.com/uploads/1/3/0/7/130739836/1998561.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475875/normal_5ff32919dc79f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463005/normal_5fcc6e9d95437.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420586/normal_5feb63df0d3ef.pdfIn PDF document text
    • https://nakigere.weebly.com/uploads/1/3/4/6/134608851/zaputetukera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_6029690e18526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379233/normal_6028ee497e903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497346/normal_600d6d318d2b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sotemapepuko.epizy.com/10051790409.pdfIn PDF document text
    • http://ravitog.rf.gd/pogiboluwalenigavoj.pdfIn PDF document text
    • http://piterar.epizy.com/37770426867.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/neoplasia_benigna_y_maligna.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/beresa.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/adjprogcracked._exe_l220.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_off0000dddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDB 5436 bytes
SHA-256: f3bf181770e71aa731e4a9e283337c2916b6ea325afb8a4460b7acca36ead53c
font_01_sfnt_off0000f040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF040 10324 bytes
SHA-256: 2e696e532f9722e6c266a91b3aa27ba5143ec7562b6396bb87111e5304d764cc

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