Malicious PDF — malware analysis report

Static analysis result for SHA-256 43fcde3300aba869…

MALICIOUS

PDF

69.7 KB Created: 2021-03-09 19:58:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 340632ad4c0bfd2c270b519690548afb SHA-1: d53223c184921a956a7d7ef78aa07cb36d8863d7 SHA-256: 43fcde3300aba86907043d6492bc1788551e16549bd0b721c0a28414f4627b18
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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.
  • 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=forensic+anthropology+training+manual+3rd+edition+pdf PDF link annotation
    • https://mutikotamibe.weebly.com/uploads/1/3/0/8/130874320/1055688.pdfIn PDF document text
    • https://xepinepuro.weebly.com/uploads/1/3/0/9/130969238/mobatigagepad-rasenomonin-sozakebex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410204/normal_5fdff5ffc6601.pdfIn PDF document text
    • https://notaxivarem.weebly.com/uploads/1/3/4/6/134633458/kawatumaduxezapal.pdfIn PDF document text
    • https://fusasevamasaxig.weebly.com/uploads/1/3/4/8/134866100/4869755.pdfIn PDF document text
    • https://xoxekoxezugox.weebly.com/uploads/1/3/0/7/130738790/fobavepojuledapami.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498997/normal_5fd8ce3ea7047.pdfIn PDF document text
    • https://xatiletovolut.weebly.com/uploads/1/3/1/4/131409128/5469855.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_600cfd0e5ce6f.pdfIn PDF document text
    • https://kezikiwagoxarud.weebly.com/uploads/1/3/0/7/130739267/difajatupa.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/jarirotexab/ketadeb.pdfIn PDF document text
    • https://901c4554-6fda-40bf-8344-1f1538f5dc06.filesusr.com/ugd/a76634_4112d7b610604e8d8300bc018ec71da4.pdf?index=trueIn PDF document text
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_be40aeb319124d65bdc40f8514d1559a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/assetto_corsa_pc_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/non_conformity_report_iso_9001.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/1001_spells_pathfinder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f1c6818-59be-4ba5-915c-67d271a09e64/10288094957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe99d620-d936-4d74-b90c-8c49460cddb4/honda_rebel_300_review_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81e6bba6-d6cc-4647-b914-fa545b7d9459/27362611694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ea6213e-eb79-47e3-8f44-9ca080ea7f79/what_are_the_advantages_of_wind_energy_class_10.pdfIn PDF document text
    • https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_c718d75f146d49ea8ac96a143fa6b228.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gedimuta/zipez.pdfIn PDF document text
    • https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_bb75946a74fb4f19b0592cd153b632df.pdf?index=trueIn 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_off0000d18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD18E 5788 bytes
SHA-256: 0fe043a32806e96e909054d3165e30f127736bba1604f38b4e40df70cdc9c85b
font_01_sfnt_off0000e52c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52C 10588 bytes
SHA-256: 8455336d682cba5b0915257036053e357bd9345d3752031246a26f789f440a6a

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