Malicious PDF — malware analysis report

Static analysis result for SHA-256 de75564f81712f27…

MALICIOUS

PDF

73.2 KB Created: 2021-03-06 08:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: aa7653ffe4edf6f0676f9b3949535cfb SHA-1: 6837c0c94bd45f678e93e58b7e1c0c8b1a7c1a7d SHA-256: de75564f81712f2764b6dd12cc5c21dcf65d3acd0c40b783eeb7de69dede13fa
126 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or phishing campaign designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to calculating product costs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/award?keyword=how+to+calculate+the+unit+product+cost PDF link annotation
    • http://ferategaj.scienceontheweb.net/36533187266.pdfIn PDF document text
    • https://cdn.sqhk.co/rodofusavivi/VfEhgid/50813581652.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/ieheOid/lakidutaxexofekabagewugu.pdfIn PDF document text
    • http://fodefon.getenjoyment.net/49360547291.pdfIn PDF document text
    • http://vorelafawinatak.22web.org/12262830598.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/jieblgc/recharge_pcs_master_card_de_250.pdfIn PDF document text
    • http://nitezebana.iblogger.org/maxi_cosi_pria_70_cleaning_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/idPgdjd/shelter_island_ferry_coronavirus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/the_leftovers_season_1_episode_8_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2efd9b9-1cf2-4942-9f32-ab72fd245555/90533792509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5383ad40-caee-469f-9031-fb6d0f2b1183/99524109994.pdfIn PDF document text
    • http://putiremupupunis.epizy.com/9037350737.pdfIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/lotera_de_tablas_de_multiplicar_para_imprimir.pdfIn PDF document text
    • http://tixofimisupabev.onlinewebshop.net/what_age_do_you_leave_the_care_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad0df8a6-6a0c-4e24-acb5-df09ae835dea/dewalt_cordless_drill_not_charging.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/794f980b-39d5-42b4-9f37-34685c471db3/kezutazunelofizopujazud.pdfIn PDF document text
    • http://pokupila.rf.gd/72202917446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef5204fb-178f-4265-a221-308ee0b60f67/nutrition_dunkin_donuts_iced_coffee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bad5ae0-f713-412e-8e32-0f1b764d1116/91602841044.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9047bc8-3b3d-43ab-bbdd-b0d1e6b7ae90/nubitisoxife.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_off0000e391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE391 5212 bytes
SHA-256: d7b9cd7c68550b9e7baafa002aa0197de223098e7f45861e5026ed5133c28d26
font_01_sfnt_off0000f550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF550 10036 bytes
SHA-256: b0b13e59535caf594c0b028861d3c270cbbbdbbbeaec579b66df5b6004d97fd5

Open this report in the interactive analyzer, or submit your own file for analysis.