Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a2388d5292d1e0…

MALICIOUS

PDF

86.8 KB Created: 2021-05-12 21:35:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6a345e14c4b864f00399ee7456db8539 SHA-1: 5f6ee12a0229ab8af86934ae3f672444e80d65e2 SHA-256: b2a2388d5292d1e03ce22c57bf924495be141a7d2af2d8d0c9af244608788cd6
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL and numerous other URLs extracted from the document suggest a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains keywords related to product pricing, likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/strik?utm_term=sony+rx100+mark+7+price+malaysia PDF link annotation
    • http://businesshelpservice.com/belebivusufimej99d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384482/normal_5fe5a3350ca0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387412/normal_5fcf10d53832c.pdfIn PDF document text
    • http://50offit.pro/how_to_get_revelation_tomestonescicgf.pdfIn PDF document text
    • http://tosety.xyz/jusudidejelivajemonetebudloi02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454170/normal_5fee108382b25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412164/normal_5fdb30240dc6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381344/normal_5ffd1dd0997b4.pdfIn PDF document text
    • http://organicnu.info/catalogo_de_cuentas_de_empresa_comercialsrys2.pdfIn PDF document text
    • http://mazafaka69pussy.online/13685793036wwa1l.pdfIn PDF document text
    • http://opit.space/macrumors_apple_buying_guideaqtgs.pdfIn PDF document text
    • http://uscreditcheck.info/fikideferobogupasizoniwaduwkw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461505/normal_5ff32aa98a569.pdfIn PDF document text
    • http://balifruit.com/24562631206e34ms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505358/normal_605d463af2a55.pdfIn PDF document text
    • http://filemarker.store/beginners_guide_to_digital_painting_in_photoshop_2nd_edition49xsa.pdfIn PDF document text
    • http://kengoru.space/om_nom_run_no_adsb252k.pdfIn PDF document text
    • https://xesisezedowajax.weebly.com/uploads/1/3/4/7/134729639/248428.pdfIn PDF document text
    • https://torovuzexas.weebly.com/uploads/1/3/2/7/132710592/kezuperari.pdfIn PDF document text
    • https://pipamoximiketo.weebly.com/uploads/1/3/0/9/130969724/6970338.pdfIn PDF document text
    • https://foregizof.weebly.com/uploads/1/3/4/8/134890581/ziselawuwuvo.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/87fdba0e-9932-4a82-9158-df61f252fed4/stock_market_books_for_beginners_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30ae2b9f-40df-4786-9a78-ca9cb0946e7a/way_of_the_four_elements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8da0192-e33d-4dd5-9dba-ec9f65755174/pasub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e832dbc-73d2-4e1f-a38e-0a9f872ad797/36809834951.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_off00011248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11248 5688 bytes
SHA-256: 09d9f3b33ecaf6db5a7c0124e02a1260e33847e3853d047f993d6fac45fe8d49
font_01_sfnt_off000125a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A8 11676 bytes
SHA-256: 7befcd9b376490154f707816792b733e0106861961e8d7037e0f9db26bba18c1

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