Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9af718da141848…

MALICIOUS

PDF

148.2 KB Created: 2020-11-18 08:05:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7c5503255a82696bf73c091f7b2d28c8 SHA-1: 1f723dfdcaf1a4a33d3e8039cbc46f49a604c4ae SHA-256: ba9af718da141848b5326e6dead19cf18de1497e75ddd2b08bdd53fad0c0d33f
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://cctraff.ru/aws?utm_term=calorimetry+pogil+packet+answers In PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/voninajekagefumazis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f8f43c76035d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_5f8bc01321a55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454419/normal_5fa093d4706ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_5f964ebded06c.pdfIn PDF document text
    • https://dugegedop.weebly.com/uploads/1/3/4/3/134338267/sofasibizilag_kavilatezejod_nexij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413111/normal_5fa8730d5628d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f9b6f3026f12.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://uploads.strikinglycdn.com/files/6d62951e-86d5-4967-abd4-995946efc7e4/50425538537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83e8ac4a-64a9-4e02-932e-3223fab21650/que_harias_si_no_tuvieras_miedo.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/pevopuzuzevire.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/vegoxazulopegilagebuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74234288-c804-40f1-a096-b3676eb024a2/fezopopete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e167b240-57ad-4312-8138-c365d320441b/ahsoka_tano_vore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa22e042-74aa-493a-a635-a650e05c07fb/7947788447.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E694 3588 bytes
SHA-256: 73b1382d1eec51486c0e5adef236d127c4bb2053cfd782f8fc9da01e0f302d6d
font_01_sfnt_off0001f373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F373 5320 bytes
SHA-256: eab7986b1303136f076234e19bbec2bc97303adda9c9d694e55d2dbcfb653c6b
font_02_sfnt_off00020597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20597 14800 bytes
SHA-256: 5f29dc48dec21543de768b575a782b30d2c7a8a1b203cfc7ec753e6681df3a9e
font_03_sfnt_off000234c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x234C7 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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