Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f9940e56560c4b…

MALICIOUS

PDF

92.7 KB Created: 2021-03-20 05:50:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2789e1ceaaa2958958e20509222e5920 SHA-1: d8da7073cd774dbabd71865efbaa50c1f8fa8280 SHA-256: 58f9940e56560c4ba42350e723c9e38747c92b6f41c5318b81923830d73ead66
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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 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.
  • 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://gimoguvi.ru/wix?keyword=attached+the+new+science+pdf PDF link annotation
    • http://xakidofe.sportsontheweb.net/books_to_read_if_you_like_fablehaven.pdfIn PDF document text
    • http://pixizosusonaxij.sportsontheweb.net/5654345305.pdfIn PDF document text
    • https://bonorira.weebly.com/uploads/1/3/5/3/135346760/55487.pdfIn PDF document text
    • http://ziwewixowele.sportsontheweb.net/mulit.pdfIn PDF document text
    • http://devuweza.scienceontheweb.net/xuxomopasolilawosisug.pdfIn PDF document text
    • https://dagojamigim.weebly.com/uploads/1/3/4/7/134763314/4910124.pdfIn PDF document text
    • http://kumululurug.scienceontheweb.net/safety_data_sheets_should_include.pdfIn PDF document text
    • http://fevofawemuwa.medianewsonline.com/radio_broadcasting_script_english_sample.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pujirageg/akhiyan_nu_akhiyan_rab_jane_ringtone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76ed077c-6bed-466f-8716-7b9d620dcc17/70539007525.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/apgar_familiar.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/yaskawa_a1000_technical_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2650cf30-2e66-46b2-9090-26163c5b3559/unknown_cheats_world_war_z.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/agarose_gel_electrophoresis_of_rna.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/righteous_indignation_breitbart.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/roxekubevowikumimodanuxog.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/alarm_ringtone_zedge.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/vafoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15fe47bc-07cb-4191-bb00-8b953f1c4028/11990519800.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C0E 5196 bytes
SHA-256: fd626dc03e2acbfe8e5edc7f9e970de9309f4ddfd77f071939ca9da4dee95016
font_01_sfnt_off00013dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DD3 12076 bytes
SHA-256: c9f455db8e84ef28c040b3a73a1b2bd0280d5bf830f576340eb946731347b42b

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