Malicious PDF — malware analysis report

Static analysis result for SHA-256 222e4c012e2fc37a…

MALICIOUS

PDF

69.3 KB Created: 2021-04-02 22:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 40a591af36d3135ea93ac7a17cc34629 SHA-1: 5b8f8deb3a9f973e6954e462623a74cfd5497886 SHA-256: 222e4c012e2fc37a27b1ea9304b2a42a30cdd6655705efbc0b23e5e26156ec1e
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 0.9991

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://leonvi.ru/award?keyword=irrigation+agronomy+manual+pdf PDF link annotation
    • http://vekisonoloze.sportsontheweb.net/88175885900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377101/normal_60596e0eb3a3a.pdfIn PDF document text
    • http://xatovapotogu.mywebcommunity.org/whos_afraid_of_virginia_woolf.pdfIn PDF document text
    • http://fegiroxopirez.sportsontheweb.net/vagebivumikotawili.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383692/normal_60096938e6d1a.pdfIn PDF document text
    • https://mafetoga.weebly.com/uploads/1/3/0/8/130874134/dirufupoledogaf_wogiw_bifisita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481166/normal_60218767ca92f.pdfIn PDF document text
    • http://tiktoktop.design/mr_bullet_feederv1vqo.pdfIn PDF document text
    • https://sabexezoguge.weebly.com/uploads/1/3/1/4/131483217/lesudofofoforosoja.pdfIn PDF document text
    • http://vinorama.fun/sentence_correction_guide_gmat_manhattann8ht4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385863/normal_5fd05b0527acf.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/duchess_of_malfi_as_a_revenge_tragedy.pdfIn PDF document text
    • http://zanartcc.net/similar_triangles_worksheet_grade_91df77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423133/normal_601d5895d25a2.pdfIn PDF document text
    • http://italia-doc.fun/html_tags_and_attributes_list_with_examples28lpd.pdfIn PDF document text
    • http://itdomen.fun/dont_say_alvida_song_pagalworld._comypdjo.pdfIn PDF document text
    • https://nobiramiw.weebly.com/uploads/1/3/4/4/134403563/6236937.pdfIn PDF document text
    • https://vobobesi.weebly.com/uploads/1/3/4/7/134702984/bujagasadixobimipav.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/d204c28d-d787-412a-afee-dd1282136814/how_to_open_lux_500_thermostat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/445c9e85-7270-47ae-bdae-b96856995019/final_fantasy_7_remake_pc_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc64632c-35c6-4b1f-abbd-7359d64ef963/que_significa_soar_caminar_sobre_agua_turbia.pdfIn PDF document text
    • https://59b7e61f-9850-45ee-add2-e9646db267e4.filesusr.com/ugd/5b9365_32367b43f5944efbbac5b27644e41ce7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ce51804-e064-4e08-bef2-7a224107316b/tasudeluro.pdfIn PDF document text
    • http://dijipola.onlinewebshop.net/diccionario_biblico_vine_en_espaol.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_off0000d2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F7 5220 bytes
SHA-256: f0f5de67f03127de3d6b030282a4f09f43cf6633159c1c1a9f50a30035a80b09
font_01_sfnt_off0000e4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AD 10216 bytes
SHA-256: d503df65c8eaeef67e80b2414dbdbc793f3bf4f55668699772fb9a2a7d00471c

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