Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a14d1a6604ce481…

MALICIOUS

PDF

76.4 KB Created: 2021-03-03 09:35:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d8d25d54af639f5e95f8eaa824c145ef SHA-1: 542e3a28b92be67ddb5aaf6c90f9206b5261da00 SHA-256: 4a14d1a6604ce48104a420838564d5b5363de4514d503404baef8e18e595f8fc
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting it's used for phishing or to serve a malicious payload. The document body, though partially corrupted, contains text that appears to be a lure for a video, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/award?keyword=video+de+camila+de+que+me+sirve+la+vida+con+letras PDF link annotation
    • http://igclienteam.com/joleralisilmtrzn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459463/normal_5fe209a9ed711.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488135/normal_5fde310d43ea4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481819/normal_5fee54a1da035.pdfIn PDF document text
    • http://apple-fruit.space/nesenuru4awkp.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/sears_kenmore_sewing_machine_model_number_2142_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471514/normal_601f6553d6369.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405652/normal_5ff33d252fbee.pdfIn PDF document text
    • http://vandify.com/989875155921z4eh.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/15009474784.pdfIn PDF document text
    • http://nejupike.mygamesonline.org/40517057843.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://s3.amazonaws.com/kiguteperilodu/bivilaxopugapaketedil.pdfIn PDF document text
    • http://mokosikok.rf.gd/rumi_poem_guest_house_meaning.pdfIn PDF document text
    • http://milebulijulami.onlinewebshop.net/49347822715.pdfIn PDF document text
    • http://kenesowozowojaw.myartsonline.com/how_big_do_boesemani_rainbow_fish_get.pdfIn PDF document text
    • http://vonanovab.epizy.com/context_clues_types_worksheet.pdfIn PDF document text
    • http://zugepoguj.onlinewebshop.net/siwefatevi.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/counterparty_credit_risk_wiley.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/venixitizokojus.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/zomifuzifetabovakenivol.pdfIn PDF document text
    • http://deburukibovip.rf.gd/agrarian_skies_2_beginners_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE91 5120 bytes
SHA-256: 092533bd8ee00b6a556d7992e982787b0035d52339a7451fcc990d6873841241
font_01_sfnt_off0000efdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDD 10968 bytes
SHA-256: c261aef3fc585d96a4dbd58ad4d12868b63ab6aea156cff4051d01b4624d1f1f
font_02_sfnt_off00011382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11382 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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