Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4dad9b1c12dc512…

MALICIOUS

PDF

87.2 KB Created: 2021-03-07 18:56:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 29ca6da1a6b1a1b7abc2327d163b4b36 SHA-1: 6b7dd6e990003258d96e626ad2209ddb3ca17c75 SHA-256: a4dad9b1c12dc5122ae513ef70da23515a8555945c82eaed6b79c035030a7bd1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit user interaction via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/strik?utm_term=how+do+you+say+ugly+in+korean PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386849/normal_5fcfea80a1684.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450746/normal_601877b4e8bfa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_60053b92360da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381287/normal_6003eb5d3ad93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383915/normal_6004ee7415eb8.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/dexabi.pdfIn PDF document text
    • https://cdn.sqhk.co/fujesepulo/hbSm069/24679594362.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486987/normal_600296b5c5d0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489834/normal_5fe87c73b9979.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/56374886148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416322/normal_600a2895ad145.pdfIn PDF document text
    • https://cdn.sqhk.co/businaxidare/7djhgd4/beauty_routines_that_really_pay_off_student_loans.pdfIn PDF document text
    • https://cdn.sqhk.co/wizevomorofe/jeBhejg/horse_basketball_games_unblocked.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/f6883c33-85cd-450c-bd9c-65ee39c8fb06/31398332192.pdfIn PDF document text
    • http://xerekexaxo.epizy.com/how_to_stop_huebsch_washer.pdfIn PDF document text
    • http://kewetanetoza.atwebpages.com/koropiludogavogenadarew.pdfIn PDF document text
    • http://durunorutap.epizy.com/catholic_answers_faith_and_science_conference.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/150e2062-bc7b-444a-8008-e9688ba73b79/delonghi_oil_heater_good_guys.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d059b381-7309-4943-b374-9c36b4c123e5/keurig_mini_black_friday_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4691f690-712a-46ad-a3d9-711f36a17462/how_to_identify_tecumseh_engine.pdfIn PDF document text
    • http://tavafusekexof.rf.gd/plato_books_free.pdfIn PDF document text
    • http://musepojomu.rf.gd/delhi_metro_map_latest_2018.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_off0000ebaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAA 15144 bytes
SHA-256: d3059dfc4c299cc9dd15bc8134ec934f8254961fa92c77c2f8176f2fe596068e
font_01_sfnt_off00011939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11939 5212 bytes
SHA-256: 9e49820193236346969fdeef5ad0ad8c8250a3cf541cbd8fa15bfa2269a5b63c
font_02_sfnt_off00012b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B18 10640 bytes
SHA-256: 5bccff5408faf56a9815cada64a096a6062e50eca2255f9c8598273729e4ead4

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