Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b212ccb9acf53e7…

MALICIOUS

PDF

92.4 KB Created: 2021-04-07 08:11:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: cf40e1c6363ec044d21b6f6c7f0eca6f SHA-1: 1af8f41317390e041cc819f8ff0fcb44b9044b16 SHA-256: 6b212ccb9acf53e70497f278197f8a47cd9d42fc2a0c918fdb097ab482f1a5fa
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://zajinet.ru/wix?keyword=shadowgun+mod+apk+data PDF link annotation
    • http://fiwupejebibogu.sportsontheweb.net/zixaba.pdfIn PDF document text
    • http://crubr.space/zexukt7b40.pdfIn PDF document text
    • http://levojefozaloro.mywebcommunity.org/chudobn_otec_bohat_otec.pdfIn PDF document text
    • https://dudakodut.weebly.com/uploads/1/3/4/4/134497067/kowanowuvokasogikok.pdfIn PDF document text
    • http://storergoods.site/command_prompt_commands_windows_10_listgx26e.pdfIn PDF document text
    • https://cdn.sqhk.co/satofurijob/OiiqhfK/hop_step_sing_oculus.pdfIn PDF document text
    • http://wspring.space/consumer_reports_magazine_customer_servicemi118.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/3kZgkdv/police_scanner_chicago_lakeview.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/rajatovenedagisimepo.pdfIn PDF document text
    • https://cdn.sqhk.co/bodujemep/hgfiezW/sling_7_day_free_trial_sign_up.pdfIn PDF document text
    • https://zirivuso.weebly.com/uploads/1/3/1/1/131164479/4d46118.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/c8jfMBn/fedibuzakezalemitujuvulu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/244f14db-b661-40ed-bb03-9f443006233a/c_asp.net_mvc_post_json.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/describe_the_difference_between_realism_and_naturalism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30b57a1b-a448-4be1-83de-177f3cf222c4/bowflex_m5_for_sale.pdfIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/tapidekopovekaveneziweri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6233c62-21b8-47e2-893f-085e4e62b6d8/kobewivejelomasiweka.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/ketoxovasumisefebebixar.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA9 5040 bytes
SHA-256: 26c2772a131f3c594c1c93b68e3c92363813c852657cf9d96d1066dfebf2440e
font_01_sfnt_off00011ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA4 10652 bytes
SHA-256: 79f5b3caabbdeac1494bed5f223391b8b1c05808c3e32adcb03861815988be76
font_02_sfnt_off0001413c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1413C 16144 bytes
SHA-256: 764fe263e68fd20aff2bbd96e69f5a400d440299d02096befa162391f913c7cf
font_03_sfnt_off0001563d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1563D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.