Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0b792930627825…

MALICIOUS

PDF

78.0 KB Created: 2021-04-08 04:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f668f80a9276cedd5e5787b6b0cccb42 SHA-1: d5a76363313fa52efb6eacee6ac43d0254ddb986 SHA-256: fd0b792930627825b38a65a77ee936c83bb6743b48a9376d68febdc0dfa0d55d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a phishing lure, using a deceptive title related to child support to entice users. It contains a large number of external links, many of which point to potentially malicious or SEO-farmed content, indicating an attempt to redirect users to harmful websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving the exploitation of PDF vulnerabilities to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://resalured.ru/strik?utm_term=how+to+not+pay+child+support+in+michigan
    • https://soranetibipuve.weebly.com/uploads/1/3/0/7/130738631/sefaropunig-jubokaxojekez-pazamem-zebalujasoxerep.pdf
    • https://wejumarokurefa.weebly.com/uploads/1/3/0/7/130776247/nevadat-lupin-tewemixeriva.pdf
    • https://tudimase.weebly.com/uploads/1/3/5/9/135985307/vowixunuvaxafobo.pdf
    • http://japijemerojin.22web.org/zuxipixukixugamofeta.pdf
    • https://rejawezegevipi.weebly.com/uploads/1/3/1/4/131437848/99fd5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/771ea3d5-8e69-44d5-b193-6cdc5fe5fe16/vugoridujovixatamanoge.pdf
    • https://uploads.strikinglycdn.com/files/e1070359-9514-46cf-a588-6bd3d76298d1/jemiduve.pdf
    • https://460eb545-5389-4aa9-9e78-d1074a8bca0c.filesusr.com/ugd/21a131_686587eb1237479d977377dc760aa96f.pdf?index=true
    • https://s3.amazonaws.com/womirofop/58449086020.pdf
    • https://s3.amazonaws.com/jukoxisojow/farm_animals_coloring_sheets.pdf
    • http://vitafunajubala.rf.gd/mabaposinuk.pdf
    • https://uploads.strikinglycdn.com/files/6bbac77c-b417-43e5-9d64-1da0eceda0b4/57313663042.pdf
    • https://uploads.strikinglycdn.com/files/9f744074-277a-4e8d-ba76-a9df5627545d/8047995631.pdf
    • https://uploads.strikinglycdn.com/files/2459f101-ff2e-40eb-bc56-78685a0ac6f9/borg_warner_velvet_drive_gearbox_parts.pdf
    • https://9a89a7da-ede3-42eb-a537-7416be21eb2d.filesusr.com/ugd/aaaf79_cb805f49b5484a568d1f1741133e1951.pdf?index=true
    • https://s3.amazonaws.com/senodiw/cmake_command_line.pdf
    • http://luviwozota.rf.gd/84944969331.pdf
    • https://uploads.strikinglycdn.com/files/f84f4bb5-1f71-487e-8335-91fd859f9185/how_do_i_pair_my_onn_headphones.pdf
    • http://xotaxebotejij.rf.gd/18196651671.pdf
    • https://uploads.strikinglycdn.com/files/f3472dfd-b041-409d-973e-cc13729470b6/hp_pavilion_slimline_s5000_series_drivers_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f19c.bin
3cbb2a94a13761ca8901017599cd372f89cab8b2982852582d20f606b9a3a6b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF19C 5644 bytes
font_01_sfnt_off000104b6.bin
f9e5d975cc2bc3fdeaad018ad454b8b664e181478c77df8d9654835bafb65414		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104B6 11132 bytes

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