Malicious PDF — malware analysis report

Static analysis result for SHA-256 0412f06afc4fa11d…

MALICIOUS

PDF

97.8 KB Created: 2021-05-15 14:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 556d4c8fc863d198c6899ad275d13b8f SHA-1: 248401f6d7a3571aba2ba7835dde7c1ea289be83 SHA-256: 0412f06afc4fa11dcc365044920d4369d14126774d63198b993e8a9127ef6fd0
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://gimoguvi.ru/strik?utm_term=what+does+the+little+prince+all+about PDF link annotation
    • https://lopifonexebifi.weebly.com/uploads/1/3/5/9/135986218/xopofugipeja.pdfIn PDF document text
    • http://vazagitomis.mypressonline.com/kanchipuram_district_pincode_list.pdfIn PDF document text
    • https://kovapuneluwaze.weebly.com/uploads/1/3/2/3/132302913/8207567.pdfIn PDF document text
    • http://pigopivelar.iblogger.org/detedodo.pdfIn PDF document text
    • https://cdn.sqhk.co/jovakuki/Ljc8qge/dungeon_hunter_5_action_rpg_mod.pdfIn PDF document text
    • https://lovilubavovujag.weebly.com/uploads/1/3/4/6/134664731/joxuvajo.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/jekibejonifufekojekij.pdfIn PDF document text
    • https://cdn.sqhk.co/wavefekus/hYuzKji/free_music_apps_for_chromebook.pdfIn PDF document text
    • https://bozetefaz.weebly.com/uploads/1/3/4/7/134733050/lefesajuzasala_xozogure.pdfIn PDF document text
    • http://fejukoturig.medianewsonline.com/procesos_de_degradacion_del_suelo.pdfIn PDF document text
    • https://cdn.sqhk.co/jesuzedavoti/czihcjb/gajiwutezesikevigufekisuw.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/gi5Myih/rugby_league_19_gameplay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lugenizuridaj.atwebpages.com/tirofefipudozevakem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6017244f-92c9-4e75-926c-c655dfe4a9dd/25667208192.pdfIn PDF document text
    • http://bividit.rf.gd/84841901814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2463e3b2-d403-458b-9e66-e396b6fdbbf8/acer_chromebook_15.6_laptop_computer_intel_celeron_n3060_16gb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1419ec45-04be-4c98-a771-a88be94fdf4f/how_to_describe_warm_weather.pdfIn PDF document text
    • http://tolerikaduvutef.rf.gd/irritrol_kd6_manual.pdfIn PDF document text
    • http://vavuliremu.rf.gd/self_driving_car_technology.pdfIn PDF document text
    • http://tijuvewoduga.onlinewebshop.net/atoms_and_molecules_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74bdab1-1111-4224-925b-0147540143f1/dumukuwesakuto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58bee565-8435-49d4-b4e8-ba56c8d34907/jack_reacher_2016_full_movie_download.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_off00014375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14375 5312 bytes
SHA-256: 887cae80e15911bc4d42e90ae0205901bc13fe3a279c3b5c259f0d4f8f36c64a
font_01_sfnt_off00015583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15583 10656 bytes
SHA-256: 0ce8c6fb463197a6ebd0a5eb75a1e4e5539a02b57b936bf3892494da3a796461

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