Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a533e32bacc0d2e…

MALICIOUS

PDF

77.6 KB Created: 2021-05-22 21:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d8389b0e38f2b857ce7f95a2ab78dc30 SHA-1: 5abe17e7e52b24299c0f3853d0f21733fabfcb38 SHA-256: 0a533e32bacc0d2e7a068201b31af0daf1a9ac986951c907811a9db497f17d14
104 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The presence of a 'download button' heuristic further suggests a lure to download malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing attempt to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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://botokaw.ru/strik?utm_term=alfa+network+awus036nh+driver+windows+7 PDF link annotation
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/8748c1fffdba0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_5fd6241c29b22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393353/normal_60057bf4e2d95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412388/normal_5fc7b94917684.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380395/normal_5fe54b68665ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476925/normal_601cb730ed01c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464323/normal_5fe4644f46d6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498986/normal_5fd8ca860e76a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454575/normal_6000ff4a79b9a.pdfIn PDF document text
    • https://zimuvudiredefux.weebly.com/uploads/1/3/2/7/132710782/zudovavevavu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369646/normal_604912c791668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452594/normal_6019f0b1661db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420766/normal_5ff800abc1f2f.pdfIn PDF document text
    • https://venubitolaxi.weebly.com/uploads/1/3/4/3/134372432/101d889.pdfIn PDF document text
    • https://gogipemefa.weebly.com/uploads/1/3/4/4/134471158/730374.pdfIn PDF document text
    • https://jajesawi.weebly.com/uploads/1/3/0/8/130813829/vibezu-wefib-nuzob-wevepufeken.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/8eadaf80-3112-4b99-bb99-4104e277b5fa/what_words_describe_summer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb5ecedd-7858-43ba-986d-8873d832938b/medetujavo.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/68261894620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e4b715-7bf0-4dd8-8bc0-8f7238b37505/dokori.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/jibuvifuganad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e26bab7-620b-40f4-acd5-b3d1ec8ce3a0/what_is_the_best_book_for_theory_of_computation.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/how_to_make_vegetable_oil_in_alchemy_classic.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/python_docstring_formatting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfa95656-4e35-485e-903a-c0ccd091db94/28164309682.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/bupenofukarapaz.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_off0000efc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC5 5740 bytes
SHA-256: 05b620c710323d10fddc696a0b8fe17adf78cd3dee02b85d7ab352b2e97c82d7
font_01_sfnt_off0001036c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1036C 10760 bytes
SHA-256: 41796fce2e93ec0b97cdd12376fe47f5291dfb56cc35863f3d4b8457a35121e2

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