Malicious PDF — malware analysis report

Static analysis result for SHA-256 773bc40fae61f9e4…

MALICIOUS

PDF

170.3 KB Created: 2021-03-27 16:29:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 439128046c484af49b78cc03c06b5886 SHA-1: db01028584b2936169d33bc0d79824791c208f38 SHA-256: 773bc40fae61f9e4cb83999005b2ffc236bd260ca7975035cbdf36cb5bc09a56
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains an external URI pointing to a suspicious domain, likely intended to lead the user to a phishing or malware distribution site. The document's structure and content strongly suggest a phishing attempt designed to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://resalured.ru/wix?keyword=alaska+word+whizzle+answers+japan
    • https://nedidibizexoba.weebly.com/uploads/1/3/0/9/130969065/4319214.pdf
    • https://ropifupagefe.weebly.com/uploads/1/3/4/5/134584424/foxefadupurukurasa.pdf
    • https://wojaginobaxap.weebly.com/uploads/1/3/1/8/131857211/687859.pdf
    • https://zofazozudu.weebly.com/uploads/1/3/0/7/130739697/vasinokug_lunadifit_xapubigiwoxet.pdf
    • https://revijokatise.weebly.com/uploads/1/3/3/9/133999222/sezulekorunigikag.pdf
    • http://gotedez.22web.org/how_much_is_guitar_mastery_intensive.pdf
    • https://rarinuda.weebly.com/uploads/1/3/5/3/135349313/3352167.pdf
    • https://cdn.sqhk.co/lamiwifa/bjdjibV/69202326683.pdf
    • https://lozugukavokukes.weebly.com/uploads/1/3/4/3/134357100/xowidimofirugu.pdf
    • http://dunetetemob.22web.org/beowulf_book_burton_raffel.pdf
    • http://saluzoz.iblogger.org/logojesisoxadotonimuvovok.pdf
    • https://bitoxogosem.weebly.com/uploads/1/3/4/3/134386372/e86048cd923.pdf
    • https://cdn.sqhk.co/fefavezevir/fAPAqpm/zoom_cloud_meetings_app_download_for_pc_windows.pdf
    • https://cdn.sqhk.co/romilononove/ahgEfhZ/69767491785.pdf
    • https://vumokaxizojomij.weebly.com/uploads/1/3/2/6/132680848/nawafamavemisepome.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b7ba932f-5aa7-48f0-b1a7-12054edff4c1/92306134575.pdf
    • https://s3.amazonaws.com/nuxomigo/colegio_profesional_de_enfermeria_costa_rica.pdf
    • https://uploads.strikinglycdn.com/files/03c59db2-d5f0-415f-aead-e862e46c4fb0/39986363988.pdf
    • https://uploads.strikinglycdn.com/files/e7f0be6f-22ff-49f0-9477-d1de42d48ec5/19364612830.pdf
    • http://kewoxorewozox.rf.gd/kobajavuta.pdf
    • https://s3.amazonaws.com/varolexexus/lozip.pdf
    • https://s3.amazonaws.com/bejikefowu/12902713453.pdf
    • https://uploads.strikinglycdn.com/files/f1081232-64e3-4356-986f-88ccc481fde1/kobifigonozi.pdf
    • https://s3.amazonaws.com/viregujipowuru/69761712247.pdf
    • https://uploads.strikinglycdn.com/files/f0109f64-345e-432d-9678-0c2b95d3893b/kill_kills_process.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_off00026218.bin
12252a3ad21e130d02e2ed99269a9b459e756c5239e78e229915ac63fa0c543f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26218 5316 bytes
font_01_sfnt_off00027446.bin
93a06edbf86421b0b356a2b5706612caa9a9a0c42e816ff68a38b54a03345345		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27446 10744 bytes

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