Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb473da0dffe00b…

MALICIOUS

PDF

82.2 KB Created: 2021-05-16 04:21:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9c59c9fce3f46a552919122722885a87 SHA-1: b1695b07008730f0820fbdb2e3f7a4941f91a48b SHA-256: 2fb473da0dffe00b0a6ddfcd2a6cf283160225df7a86058499235955537160ae
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 0.9995

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://gimoguvi.ru/strik?utm_term=one+of+us+is+lying+film+trailer+deutsch PDF link annotation
    • https://cdn.sqhk.co/dunuxorigu/gC7mpgj/65770094221.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/geijhgl/wedotopevoliga.pdfIn PDF document text
    • https://cdn.sqhk.co/mimofeto/gdihKgj/57250188608.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/65531993127.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/Dz2mjj7/winter_warrior_parka_long.pdfIn PDF document text
    • http://ruxuzosok.mywebcommunity.org/83482204959.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/b5000b67-82f7-45d1-93bf-b692311751ae/how_do_i_know_if_my_dyson_v6_battery_needs_replacing.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/47532527951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b61769e-a711-4e23-aa55-5dc516710156/frigidaire_stackit4x_washer_and_dryer_stacking_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf792c9d-69f1-4052-8b56-c8b039c5984f/what_is_the_story_behind_50_shades_of_grey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c1c5dc-c9a5-4e81-b953-2aa72a2d2378/who_provides_tactical_combat_casualty_care_tc3.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/67911396059.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/34462389909.pdfIn PDF document text
    • http://tokivatifizaxe.rf.gd/dakam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59d502ec-a530-46d6-8012-e90828e2c625/why_iceland_is_called_land_of_fire_and_ice.pdfIn PDF document text
    • http://semiwexojexudu.epizy.com/sap_crystal_report_for_visual_studio_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ab0a4ae-fe77-4bc6-bb9e-b796ebaab202/little_red_riding_hood_short_story_in_afrikaans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91db0e75-fc60-4f21-aba4-100295456321/vw_service_schedule_canada.pdfIn PDF document text
    • http://madigekole.onlinewebshop.net/guziz.pdfIn PDF document text
    • http://kokomato.epizy.com/the_landlady_themes_and_symbols.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/wolitelajagetikerige.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_off000102dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DD 5564 bytes
SHA-256: f83ff23419fea562f24ea906207d1b16abdf1b357bd4e0b5f7efcc3753a270e0
font_01_sfnt_off000115a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A4 11140 bytes
SHA-256: bd81e3567ef9f5de79e32ebc412218d372c5e054993219fad3b4b966e4c5e1db

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