Malicious PDF — malware analysis report

Static analysis result for SHA-256 d75a6696c7e900bf…

MALICIOUS

PDF

86.8 KB Created: 2021-03-16 23:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 246baf6dbaa52523f4f63712081e8510 SHA-1: 83ff6fc0df907561496b6d97b756b68a27e6ed51 SHA-256: d75a6696c7e900bfd9fe87fb30b1a1e57c4efadb28eef73b85618c9345f378dc
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 0.9996

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://baarspo.ru/wix?keyword=war+room+study+guide+pdf+free PDF link annotation
    • https://badakawage.weebly.com/uploads/1/3/0/9/130969543/wenemumabawabe_xezapavuwetoz_wafijad_vupobatimadukud.pdfIn PDF document text
    • http://brumbum6.xyz/whirlpool_cabrio_washer_troubleshooting_lfxoyiu.pdfIn PDF document text
    • https://pidorisegis.weebly.com/uploads/1/3/4/7/134761928/ee73c08a99.pdfIn PDF document text
    • https://kabosasano.weebly.com/uploads/1/3/5/3/135398154/xilusigesag.pdfIn PDF document text
    • https://cdn.sqhk.co/xidafigutoxa/je2Qjjk/58181250555.pdfIn PDF document text
    • http://fovoxarofej.getenjoyment.net/93186371972.pdfIn PDF document text
    • https://detatabuloto.weebly.com/uploads/1/3/5/3/135346227/83a409defa6.pdfIn PDF document text
    • http://indonesia2health.online/google_maps_api_android_pricingxl0wl.pdfIn PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/wefizonubuwodati.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/Yjggfjc/adventure_flights_hot_air_balloon_rides.pdfIn PDF document text
    • http://mexicotop3.xyz/809561089184a37v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccd7f3cf-e4b1-41de-b16c-61bc4921d671/what_were_viking_axe_handles_made_of.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/fiba_basketball_rules_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/gusesadadevaguz.pdfIn PDF document text
    • http://vafitinupisojud.onlinewebshop.net/elements_of_effective_report_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/merisufiregowuxeninolazid.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/sijanonoruratino.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/19924976969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/227ed925-0507-46de-a0be-e67875bcdaa9/mataburuxufo.pdfIn PDF document text
    • http://tagijonegularol.myartsonline.com/is_the_raven_a_true_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29c64c52-04ae-4fe6-b6a0-f7415d3eef10/the_startup_of_you_book.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/pivot_animator_4._1._10_free.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_off000115a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A7 5444 bytes
SHA-256: b81405f8ddce59b4e9b0ee4bd990b347b04b26c4ba13b4e263409ad12532b8c0
font_01_sfnt_off0001282e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1282E 11200 bytes
SHA-256: c3e291d4ae7f8907ccabe7713e313449aa6cb0ca77af74f9fce9ddf17a715b87

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