Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bce2642b4209a7b…

MALICIOUS

PDF

127.7 KB Created: 2021-03-16 08:32:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa50133da6e96f5c33245e1fba4b8df1 SHA-1: e88ca3324fe54acf38549495103246b46e11b240 SHA-256: 5bce2642b4209a7b8047251482507177ebd49f4910db24ebb634abddd1143599
136 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it contains an advance-fee scam lure. The embedded URL `https://midufefew.ru/wix?keyword=dogs+yahoo+answers` suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF format and the presence of external URIs indicate potential for malicious JavaScript execution or redirection to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://midufefew.ru/wix?keyword=dogs+yahoo+answers
    • http://remastacer.com/wovojagebinoxawotklkyd.pdf
    • http://zusagukitu.mywebcommunity.org/jaeger_lecoultre_atmos_clock_repair_manual.pdf
    • http://leledup.mypressonline.com/piazzolla_libertango_piano.pdf
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/8043091.pdf
    • https://jarosebat.weebly.com/uploads/1/3/4/6/134695718/zagadarovoboz-lobijelixebeve-mivef-fonusukasabam.pdf
    • https://bizunasudene.weebly.com/uploads/1/3/5/3/135345394/kamudasekeg_gabosoz.pdf
    • http://tdsevsvet.ru/55105342240oo9ul.pdf
    • http://fabulouss.space/86541003809ph0cg.pdf
    • http://totalcreditreport.info/lipivapolibuzunobul4xynj.pdf
    • http://stylecurtains.com/58236343290hg0hp.pdf
    • http://rubisteq.online/donoxosizozatipazaxan5xv2q.pdf
    • http://fifuxuzod.iblogger.org/12242690578.pdf
    • http://vevaxogejaz.scienceontheweb.net/can_lower_back_pain_be_cured_by_yoga.pdf
    • http://veraxibowamopax.iblogger.org/bewixopudajokeruz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sunosazogefot.epizy.com/how_much_do_contract_lawyers_make_uk.pdf
    • https://s3.amazonaws.com/nuruvapozixix/25111169575.pdf
    • http://gupizamowakop.myartsonline.com/79032661788.pdf
    • http://zewodef.epizy.com/40086103082.pdf
    • http://magivaxinel.rf.gd/among_us_mod_apk_new_map.pdf
    • https://s3.amazonaws.com/fejakixoweka/activity_sheets_for_letter_p.pdf
    • https://s3.amazonaws.com/divikufifir/mazilewax.pdf
    • https://s3.amazonaws.com/nijudow/molecular_orbital_diagram_practice_worksheet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b577.bin
ba378f33e8d5d0cfe45cee58fd07c92460a67100e603ac1edad8ef9feb742e6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B577 5108 bytes
font_01_sfnt_off0001c6f1.bin
619a9be78836415aad9ed0fb437204d3c864f3e73c77a46a0dc885b059213404		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C6F1 13136 bytes

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