Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d96be6974a5dddc…

MALICIOUS

PDF

74.5 KB Created: 2021-04-15 14:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9649443406dbe7d4e9e4e4cd844e22fe SHA-1: c547b7ccad05a9fee2946d07db3f0f7af475e073 SHA-256: 9d96be6974a5dddc33422423c0385702d03a1305823bda1613b40f01d83df51f
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

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://pelibifir.ru/strik?utm_term=winchester+model+94ae+serial+numbers PDF link annotation
    • http://gatowixipeba.mywebcommunity.org/jarogudibilevesuso.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/43576071869.pdfIn PDF document text
    • https://rapaxexujimina.weebly.com/uploads/1/3/1/4/131454932/dotomoxakafagu.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/iajagh5/38658091425.pdfIn PDF document text
    • http://zatoboyvibor.fun/lujiluruzisabetomurez7u5g7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423154/normal_5fc8f911380f4.pdfIn PDF document text
    • https://cdn.sqhk.co/rejiwosujupa/jd7hcif/zelaverulemujimu.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/xivuxo.pdfIn PDF document text
    • https://tabodixab.weebly.com/uploads/1/3/4/5/134585887/zixekedo.pdfIn PDF document text
    • https://donasidavojixa.weebly.com/uploads/1/3/4/4/134494786/dbb38.pdfIn PDF document text
    • http://lipexifinidoda.scienceontheweb.net/33044611544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_606c1af50a0ed.pdfIn PDF document text
    • https://vunozeguwogiwe.weebly.com/uploads/1/3/4/7/134745761/tudiwonejak-konovexolu.pdfIn PDF document text
    • http://mists.space/86693081008u5o0e.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/calculus_bc_bookbdyvo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465259/normal_5ff137f91f328.pdfIn PDF document text
    • https://gixatupugibezi.weebly.com/uploads/1/3/5/2/135296842/1441669.pdfIn PDF document text
    • http://allostar.buzz/systems_architecture_7th_editionfn2yb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/navoburarovada/saad_lamjarred_new_song_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/67587640242.pdfIn PDF document text
    • http://wumugajus.onlinewebshop.net/fobad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DF 5460 bytes
SHA-256: f54e3878cd41a767c8f2a329a1d3f905a4ef2747f156b3695d823a73ed56da80
font_01_sfnt_off0000eb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3D 10352 bytes
SHA-256: dc17dc43252e8ace0879f4e970d63127f0b017886c290ecc051b373032fc9f73
font_02_sfnt_off00010ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA8 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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