Malicious PDF — malware analysis report

Static analysis result for SHA-256 696707aa6f6801cd…

MALICIOUS

PDF

72.3 KB Created: 2021-06-06 15:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4821507e3ffe627bc98af4f6fb49d24b SHA-1: e385d0935a6f362fbb387b591569844b14d51bf9 SHA-256: 696707aa6f6801cd392aa9aef96dd031b5f4d2136428149a7290d6219c64fe85
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://denalozi.weebly.com/uploads/1/3/0/7/130776502/7fb59636b6a9.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_60411ee6d139a.pdfIn PDF document text
    • https://biwozatilajatem.weebly.com/uploads/1/3/4/6/134636438/7f1183c4.pdfIn PDF document text
    • https://senamevab.weebly.com/uploads/1/3/4/6/134689233/gaxebofuluz.pdfIn PDF document text
    • https://zexakadobad.weebly.com/uploads/1/3/2/6/132682290/5826307.pdfIn PDF document text
    • https://baginemesurewis.weebly.com/uploads/1/3/1/3/131380932/31c3bc0f41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_6069ecf079bc9.pdfIn PDF document text
    • https://zuwufapiju.weebly.com/uploads/1/3/5/3/135348861/mibanizali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410018/normal_604ca9fe062fd.pdfIn PDF document text
    • https://kupubasurunasoz.weebly.com/uploads/1/3/4/6/134695217/26ca2c63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481423/normal_5fe1b837799b4.pdfIn PDF document text
    • https://nasakavagupudo.weebly.com/uploads/1/3/4/7/134766537/powepavu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/0IJhScypsXo/wb?keyword=biochemistry%20textbook%20onlinePDF link annotation
    • http://vananizi.pbworks.com/w/file/fetch/144522750/how_to_write_a_sales_agreement_for_real_estate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3c56693-0d90-4007-bdff-ac8664c43914/irobot_roomba_e5_black_friday_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f31864f3-d636-46ec-9758-67be72b14a43/how_did_kamala_khan_get_her_powers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60dff9f6-dbc2-4d5f-9c87-84c97ce37035/galaxy_tab_2_7.0_charger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96282001-5d82-4173-ae38-ade07c36605a/gazuwazejaxod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6136de72-88b5-4686-94fb-914c8afb4290/kiligaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6033ce6-18ff-4cae-b502-ddc8d7095893/sesokowufulevodakubas.pdfIn PDF document text
    • http://gitefov.pbworks.com/w/file/fetch/144622395/what_does_relative_isotopic_mass_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3abf601-e188-4d7b-9b22-15a7170baffd/does_alexa_work_without_power_cord.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_off0000db3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3E 5252 bytes
SHA-256: c8091aa73207d1286a853d7c8042e11c72b653b5bf636b80040f67460ee4800f
font_01_sfnt_off0000ed02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED02 11036 bytes
SHA-256: aeb3d4fe3ccaf798e33fb4203a5f251e461c380b183a571269829d2caaa1c8d1

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