Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7a3c591b23c838c…

MALICIOUS

PDF

78.8 KB Created: 2021-03-08 06:09:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 76c04fcd98d1b5caf01cc1e8c3ba2074 SHA-1: 97335b1169bf31067fce23c68cb8c233b145e65e SHA-256: f7a3c591b23c838cf06e6f8cc6b3b674000078c2ab2e4762f004687ce9408656
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 0.9997

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://jottigo.ru/strik?utm_term=bosch+obd+1000+erase+codes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415065/normal_6013bf5d0dc66.pdfIn PDF document text
    • http://nipizakevenuvis.scienceontheweb.net/dorijopekipusowalut.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/he6jdjd/cartoon_racing_games_ps3.pdfIn PDF document text
    • https://cdn.sqhk.co/dumudegurit/hfVhbJ0/scanner_scan_documents_itunes.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvugamajuxo/UiiCggF/tap_the_frog_game.pdfIn PDF document text
    • https://cdn.sqhk.co/zesunotu/jaqbhcz/kenileteteripudemudiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380871/normal_603d235dadebf.pdfIn PDF document text
    • http://bavimobuxadu.medianewsonline.com/what_can_make_your_blood_pressure_high_during_pregnancy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476930/normal_5fceaaca136ea.pdfIn PDF document text
    • http://magnetfix.store/the_story_of_channon_rose_2kd6t2.pdfIn PDF document text
    • https://cdn.sqhk.co/nomuzali/jg6jaGQ/wekunuxupexurifozuze.pdfIn PDF document text
    • http://swiss-gear.store/english_idioms_in_use_intermediate_second_editiongagw7.pdfIn PDF document text
    • http://onlineeshop24.xyz/9011523229cwo9r.pdfIn PDF document text
    • http://reduslim-officialsite.site/how_to_use_godrej_refrigerator7kh2q.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/nomafuzigirubo.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/batman_the_dark_knight_rises_full_movie_download_in_hindi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501998/normal_600155cf5589b.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/67a1840b-c167-4659-ba4b-36a2c4b02972/85505998481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9ad30b-fff1-4f76-99c8-5a7628b4973c/vewolososoxajigixisit.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/nipikivugigagufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/056c3a8e-4d9c-4feb-9185-aaaa8d1ed0ed/do_smoke_alarms_go_off_for_carbon_monoxide.pdfIn PDF document text
    • http://zasuwunal.myartsonline.com/rain_bird_esp-6tm_wont_turn_on.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF312 5376 bytes
SHA-256: 1177e2c4dac5e10ec1ca0fa9a5edf2ab9e285ace79f96bf8f889996d83352dea
font_01_sfnt_off00010552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10552 11684 bytes
SHA-256: 9edc297dafd1f46e58ee2c244e542f0ed3b29148611e930b0e9f22e38f6acb83

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