Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0018f8d9dad2fef…

MALICIOUS

PDF

78.6 KB Created: 2021-04-07 09:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ea4f54075073121f4e1837d0740f4436 SHA-1: 6deb0a9ef83b24f050025fc104d8e5580a4947ee SHA-256: c0018f8d9dad2feffee26ab75d3366c95d14e831bafe011cdad49907dbf485d3
126 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to search keywords, further supporting a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://zajinet.ru/wix?keyword=jimmy+james+and+the+blue+flames+jimi+hendrix PDF link annotation
    • http://labifovejes.mypressonline.com/38605000942.pdfIn PDF document text
    • http://rixugogalide.22web.org/classified_balance_sheet_in_report_form.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/29852157644.pdfIn PDF document text
    • http://ririzobe.medianewsonline.com/silabus_biologi_sma.pdfIn PDF document text
    • http://zagavexakagin.mypressonline.com/bertrand_russell_logical_atomism.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mipagolawalixa.onlinewebshop.net/33749499961.pdfIn PDF document text
    • http://gudugapapilile.atwebpages.com/accuair_elevel_sensor_install.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a001522-0e6f-44d2-90bd-b9d53306a94b/62877577580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94d4062b-28cf-4446-8334-72f005e0b95e/onkyo_remote_codes_for_directv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6f3a98a-24b3-4446-82fc-e5ed46813985/dr._wayne_w._dyer_cause_of_death.pdfIn PDF document text
    • http://konazosite.epizy.com/vutew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8465f41f-815b-4f80-8d02-24911e0b2224/33651059519.pdfIn PDF document text
    • http://jelunegizubu.atwebpages.com/90362565704.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a988ade2-febe-4dda-86fe-2808ef18db44/kyocera_printer_drivers_for_mac_10.10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/900fe458-5024-4ff0-9bf6-31b7844fb371/iceberg_slim_pimp_book_free.pdfIn PDF document text
    • http://butorinowu.myartsonline.com/92328785851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdd4bf10-1262-43ff-9e16-96228193a45c/48118171368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ee313e8-12dd-44f9-b57a-67ac9a59c505/nevatuvamuxa.pdfIn PDF document text
    • http://katetagozu.epizy.com/musanuxamupuko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34fda66e-59b2-4f22-ad05-a14c8c563fcb/invasion_of_privacy_album_cardi_b.pdfIn PDF document text
    • http://solejow.myartsonline.com/94626093648.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_off0000f2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E7 5524 bytes
SHA-256: 63433aa990c1467802778a910b0e0a2d3b3da5e900f44f161dc5d7accd921175
font_01_sfnt_off00010590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10590 11220 bytes
SHA-256: 7008af2b18d16f8285434218a41df577a1aef856c73fd9e8d884f935a346b929

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