Malicious PDF — malware analysis report

Static analysis result for SHA-256 675ddb8caa27a64c…

MALICIOUS

PDF

77.2 KB Created: 2021-03-16 01:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: e076dc7487a99094c8e3ff75b71ac3bc SHA-1: 25ee4cce7db75ad330e5f8d6ad57c6f48a6ece99 SHA-256: 675ddb8caa27a64cc9b6d76fe8774c1ab0bc30ec919e62bc5c5cf34ea7fc452c
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URLs and the document's structure suggest it functions as a link farm designed to redirect users to potentially malicious content, likely a phishing or malware download site. The presence of an external URI pointing to 'fokemale.ru' with a query parameter related to a 'money hack' strongly suggests a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://fokemale.ru/123?utm_term=asphalt+8+money+hack+android PDF link annotation
    • http://misstourist.info/xowafiwodadugo24wej.pdfIn PDF document text
    • http://ropufogesuzazeg.iblogger.org/what_is_criminal_justice_system_in_sociology.pdfIn PDF document text
    • https://kowadesilokawu.weebly.com/uploads/1/3/4/2/134265693/05238a4.pdfIn PDF document text
    • http://lalashoppen.online/67105159906uko7a.pdfIn PDF document text
    • http://psyhologrzn.ru/can_you_remarry_after_divorce_scripture4u8ow.pdfIn PDF document text
    • http://supermagazforsale1.xyz/52610551747pyx6y.pdfIn PDF document text
    • http://ganoroke.iblogger.org/97724456769.pdfIn PDF document text
    • https://felavutiz.weebly.com/uploads/1/3/1/1/131164211/3603165.pdfIn PDF document text
    • https://cdn.sqhk.co/ketifoseja/jdULjgS/mifaxodekoguxaki.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/aihhhhe/offline_games_for_chromebook.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/fhifnhj/tezoxeroxigisugawopazika.pdfIn PDF document text
    • https://fudolimag.weebly.com/uploads/1/3/4/5/134586879/5915506.pdfIn PDF document text
    • http://vipadminler.org/how_to_tell_if_battery_is_charging_windows_10cr5ee.pdfIn PDF document text
    • https://xolijusir.weebly.com/uploads/1/3/4/0/134016651/gupizupeliferoriwasu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ludujefu.epizy.com/small_business_administration_joint_venture_agreement_template.pdfIn PDF document text
    • http://zadaxuro.rf.gd/do_you_need_a_license_to_drive_a_forklift_in_ontario.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/digizeroguxezuxiv.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/68021304305.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/badmaash_company_songs_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/free_full_movie_evil_dead.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/2006594454.pdfIn PDF document text
    • http://kinapuxilupore.rf.gd/appsc_group_4_study_material_in_telugu_free_download.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_off0000efd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD2 5664 bytes
SHA-256: 8d0dcbfdf20f52b78dbfd8ba3f3690a6af6d5fbc072128ded370c2b3d3f4ce99
font_01_sfnt_off000102f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F3 10812 bytes
SHA-256: bbe2d0fc2bd4cdd4b937c918a352f003d312248e3578b0a323d6f7f3bf8488d9

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