Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2c6d1556e3c976…

MALICIOUS

PDF

75.4 KB Created: 2021-02-25 08:20:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ad10b64e89df015d6a6d87a607f30fb2 SHA-1: caf39430ec467ae83bfa1d03bcd43d40a60a0a57 SHA-256: ae2c6d1556e3c97663bc32c4bf0f798193ea6cd66051c68ca9c8f47704a1a1df
126 Risk Score

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://jottigo.ru/award?keyword=clean+keurig+single+cup PDF link annotation
    • http://vashastrahovka24.ru/rimafugirigolo33t7a.pdfIn PDF document text
    • http://vertigoa.online/diwulaxuf2gm1a.pdfIn PDF document text
    • https://gewasulupav.weebly.com/uploads/1/3/0/7/130740056/7841847.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/on_the_road_truck_simulator_console_release_date.pdfIn PDF document text
    • https://bogonifad.weebly.com/uploads/1/3/4/1/134108647/namutiziw-lituwepejuxek-somutow-xopimifexi.pdfIn PDF document text
    • http://yourlivehelp.com/86791276280uqjtv.pdfIn PDF document text
    • https://funopazotasar.weebly.com/uploads/1/3/1/0/131070342/jupexudodux.pdfIn PDF document text
    • https://cdn.sqhk.co/domuduxuro/ggc9Xie/linkto_health_osu.pdfIn PDF document text
    • https://tudaluvakagovax.weebly.com/uploads/1/3/4/6/134614365/012f17f.pdfIn PDF document text
    • https://cdn.sqhk.co/tenotitur/fhd1Vhb/color_road_app_store.pdfIn PDF document text
    • http://giftcard-sale.store/bodyguard_movie_ringtones_freeeiouc.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/31589146768.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/Njbjbie/heroes_mobile_world_war_z_hack_version.pdfIn PDF document text
    • http://beautysss.site/851414009083dqgj.pdfIn PDF document text
    • https://komomofuxuz.weebly.com/uploads/1/3/4/4/134494735/6f15379906a4.pdfIn PDF document text
    • http://wersita.space/246092078248en3q.pdfIn PDF document text
    • http://rawenspant.online/573115607570arwz.pdfIn PDF document text
    • https://gatikewud.weebly.com/uploads/1/3/4/3/134382011/towogonomimesa_pitizezam_javidizubezipus.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutowede/1hgLYie/roadside_attractions_map_tennessee.pdfIn PDF document text
    • http://opticsystem.website/present_perfect_simple_exercises_with_answersh7evc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tososite.onlinewebshop.net/one_of_us_is_lying_audiobook_google_drive.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/how_much_does_fallout_4_dlc_cost.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_off0000eb36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB36 5068 bytes
SHA-256: 001a6f9da6beba23365e78c0bc9845d812b7168f6f298fd3bbfcf844b2bd42c2
font_01_sfnt_off0000fc89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC89 10476 bytes
SHA-256: e4e0011dff4abc22d6d8cb40c94151a1b1dc24c6e7e35aff43dd80d0758beb48

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