Malicious PDF — malware analysis report

Static analysis result for SHA-256 29983d673691ff64…

MALICIOUS

PDF

75.2 KB Created: 2021-04-04 02:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6a185573a98eea5034dac815a7a0c51e SHA-1: 107bd47817075c416cbf3549b50699e605a00d1e SHA-256: 29983d673691ff64c0ba411f5e20f99c9cf0357c78e9daba539920e90602b836
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://kuzutuzo.ru/strik?utm_term=collins+dictionary+translator+spanish+to+english PDF link annotation
    • http://fuzuwozozat.mypressonline.com/11561505688.pdfIn PDF document text
    • http://fimuvukabiwijad.22web.org/lagu_percaya_aku_gabriella_uyeshare.pdfIn PDF document text
    • http://vadosaj.getenjoyment.net/minn_kota_ulterra_trolling_motor_recall.pdfIn PDF document text
    • http://nititesosorejiw.iblogger.org/alcoholic_liver_guidelines.pdfIn PDF document text
    • http://pifadopagel.scienceontheweb.net/siwefekamodawumorif.pdfIn PDF document text
    • http://zodajixinijetu.22web.org/zukepixizupog.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/1c7aaea8-aab6-4bbd-a49c-3162f0f64086/19037714549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a1d8992-7fff-4ef3-afd6-dc6e3142e1a6/is_gamemaker_studio_2_worth_it.pdfIn PDF document text
    • http://dezezefisimel.rf.gd/collage_photo_editor_apps_for_android.pdfIn PDF document text
    • http://sidigoxe.rf.gd/how_to_interpret_mbti_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/014c5553-4e61-4d19-9a1e-4b51a468fad2/stihl_bg86_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c2da6e9-9a7d-4ac1-b1ab-a81b7e06c640/how_to_pair_fios_remote_with_samsung_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1840d997-7021-417e-a436-6b98bef36084/63709393402.pdfIn PDF document text
    • http://muzulozak.atwebpages.com/mewowurokisevax.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/arvind_akela_video_song.pdfIn PDF document text
    • http://tijuvewoduga.onlinewebshop.net/can_t_help_falling_in_love_fingerstyle_tabs.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/96860402119.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/3_examples_of_conflict_in_the_workplace.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd1f9a6d-16fc-4adb-b617-b8a49ab8743f/88139243177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23f3745c-6088-4209-80f0-fef01bd2eb2c/17608155313.pdfIn PDF document text
    • http://bidusibebawuz.onlinewebshop.net/9702510238.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/lategasami.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_off0000e58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58E 5340 bytes
SHA-256: 0709f9aea7368dce029255db4e4e98436da87c6c4cde81f14a1546f1d263c63d
font_01_sfnt_off0000f7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B9 12088 bytes
SHA-256: e3510e153fe86706acd77b1487874ccaf4687d97db034bcf518425670740d3a7

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