Malicious PDF — malware analysis report

Static analysis result for SHA-256 90991992495b059f…

MALICIOUS

PDF

84.6 KB Created: 2021-03-08 20:27:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: d6c05964add3acb0ab4cec5138f35106 SHA-1: 4491960f73b7b138e812c1681194af67b1d7a195 SHA-256: 90991992495b059fd0fd093aaaa7242449feb1dc192c61a3d1a382e11cc4f5d4
126 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier. It contains multiple embedded URLs, with a primary suspicious URL pointing to 'fokemale.ru'. The document body, though heavily obfuscated, contains keywords related to a Garmin GPS sale, suggesting a phishing or malware lure. The presence of numerous links to disposable hosting further supports a malicious intent, likely for distributing further payloads or conducting phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/strik?utm_term=garmin+gps+7612+for+sale PDF link annotation
    • http://setifol.66ghz.com/lexis_audio_editor_para_android.pdfIn PDF document text
    • http://polobasopika.mywebcommunity.org/bose_wave_radio_cd_awrc-1g.pdfIn PDF document text
    • http://eushopvmn.site/110458707306hbrs.pdfIn PDF document text
    • http://fortuneocredit.com/before_after_photo_templatefreec.pdfIn PDF document text
    • http://cupe1.ru/vesumimubv4ut3.pdfIn PDF document text
    • http://difijeso.iblogger.org/jaxanadobulerizebexijuxi.pdfIn PDF document text
    • http://parralax.net/numerologa_tntrica_evolutivazkmpg.pdfIn PDF document text
    • http://com-signto6.xyz/7397914828fsfw8.pdfIn PDF document text
    • http://chambrehub.xyz/17161901823m88lj.pdfIn PDF document text
    • http://slamelina.website/duwuxi0wgb7.pdfIn PDF document text
    • http://onsideball.info/most_popular_ballads_2019uk3v2.pdfIn PDF document text
    • http://kieverts.xyz/41962138110bs47u.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/2004_honda_civic_maintenance_required_light.pdfIn PDF document text
    • http://mevesepegubisis.scienceontheweb.net/2610513642.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nelixosixumev.epizy.com/chaalbaaz_1989_full_movie_free.pdfIn PDF document text
    • https://599b09cd-7b6a-4758-94a3-08a08d316165.filesusr.com/ugd/628a76_981659d7fcbe4ca08658e403a65f56b0.pdf?index=trueIn PDF document text
    • https://14864a69-2465-45da-a912-c6f78a3f99b9.filesusr.com/ugd/409ca8_fb39f0dbc3a347b09549ee29df61ad96.pdf?index=trueIn PDF document text
    • http://jirizaxewusi.epizy.com/vimujoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f402d3b8-ee50-40b8-a30c-aee370d844b1/2nd_grade_math_worksheets_addition_with_carrying.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f57e5cf2-2139-4271-85db-0bfe3d658cfc/38705392412.pdfIn PDF document text
    • https://dbb1fad9-9c05-458f-9e32-bc0b7f65d7ec.filesusr.com/ugd/451461_802ad628ccda4dfb802c7c5ec6fd9b59.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b49c5e8-b754-4500-87ab-37e455d3cc10/vagafunaruzoro.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_off00010c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7B 5672 bytes
SHA-256: f9ff3aadee7081539d50805c7c694113af24ee83e0c0f1eeee02de3ea1168200
font_01_sfnt_off00011fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC9 11176 bytes
SHA-256: b8d5c4da134db8a088fc4cb72bcf9a8d382af6a315e82aefe3ad434e46a51344

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