Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c7aeb13e73a56ed…

MALICIOUS

PDF

66.6 KB Created: 2021-03-14 12:21:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fcb5138201cd4ad00f66b9e5c9b6690a SHA-1: 0886c243ff102dc82dd51cfd8debee5952298c4f SHA-256: 6c7aeb13e73a56edbe936b064eda1c5ce251f1c143792c463cb28770fc356879
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a domain associated with game-related keywords, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of multiple external URIs indicates an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=return+man+4+unblocked+games PDF link annotation
    • http://towumodoxilokox.22web.org/how_do_i_convert_a_crib_to_a_toddler_bed.pdfIn PDF document text
    • http://duwosolutanuz.mypressonline.com/88824271981.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/doviliwut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457312/normal_5fe4565d10afe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411481/normal_5fcfa3b0c1036.pdfIn PDF document text
    • http://rujewazaxijaza.sportsontheweb.net/how_to_draw_anime_boy_easy.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/libro_carcel_de_amor.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/export_without_bleed_indesign.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/blue_jackets_schedule_2019.pdfIn PDF document text
    • http://zofugef.mypressonline.com/89462984676.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447265/normal_601edeec2745b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389809/normal_5ffe8d3e3d6d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407102/normal_5feb86a456787.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_5fc6f6b18c7cc.pdfIn PDF document text
    • http://ravitidi.22web.org/formal_address_in_portuguese.pdfIn PDF document text
    • http://fofiwafajelerax.sportsontheweb.net/13321156270.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepagewav.atwebpages.com/33148387718.pdfIn PDF document text
    • http://tejusadesivuti.epizy.com/hosanna_loud_hosanna_sheet_music.pdfIn PDF document text
    • https://d67926d6-99fe-48a4-938f-95006fdf2de6.filesusr.com/ugd/21d82e_135ef74d4b624383956d2673e6ec6db0.pdf?index=trueIn PDF document text
    • http://kovefevejafuk.epizy.com/wmdc-_helper._exe_windows_10.pdfIn PDF document text
    • http://zuzasuzojenox.epizy.com/funniest_book_to_read.pdfIn PDF document text
    • https://5a995288-ce6f-4ae3-a3e6-14272d8003db.filesusr.com/ugd/7be1cd_3aef44d46b7c42e29aba87d83374cf2a.pdf?index=trueIn 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_off0000c781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC781 5556 bytes
SHA-256: 4f14d6c6701d7732c4b7320b57ccf43911ab98c029544e526ab9dca86093ddd8
font_01_sfnt_off0000da53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA53 9736 bytes
SHA-256: 3b511d976d86a8e74179cd587eed8135f1f7b3c11590d1d663d93c86f3544fb8

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