Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda6147206bac633…

MALICIOUS

PDF

77.3 KB Created: 2021-02-27 04:20:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 84ff2f1a58786e180fcd72e13fc6a9b2 SHA-1: 382ffc2f999dfce60f80dbff4610473d44bd585f SHA-256: fda6147206bac633239bce7afe5d9a656ac2841742339316ed2540f4d48d96ad
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to deceive users. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or malware distribution. The presence of external URIs and the structure of the PDF suggest it's designed to redirect users to malicious sites.

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://resalured.ru/award?keyword=la+casa+de+bernarda+alba+pdf+italiano PDF link annotation
    • http://lojapidabud.mypressonline.com/66213447010.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/recetas_de_cocina_para_el_ayuno_de_daniel.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/jegc9ge/ludo_clash_play_ludo_online_with_friends.pdfIn PDF document text
    • https://fokididekorup.weebly.com/uploads/1/3/0/7/130775810/dinofes.pdfIn PDF document text
    • https://dupujemewo.weebly.com/uploads/1/3/4/0/134040979/pipagemexe.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/eaton_transmission_fluid_type.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/the_shining_book_vs_movie_wikipedia.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/iAigKie/94256404529.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/ihYlidl/wibufotimaj.pdfIn PDF document text
    • https://vepodiruwa.weebly.com/uploads/1/3/4/3/134374194/semuwevad.pdfIn PDF document text
    • https://dawawasokiju.weebly.com/uploads/1/3/1/4/131408838/rulusetalovuweb-demineb-folinoza.pdfIn PDF document text
    • https://cdn.sqhk.co/kolazapikib/hbjhpLe/legik.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/goodwill_near_me_directions.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/dii2Emw/wawijudodagob.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/SWhicib/maze_runner_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/new_zealand_lotteries_commission_annual_report_2017.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/online_project_management_training_programs.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/zupexabekome.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/the_heir_kiera_cass_wikipedia.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/hinkhoj_dictionary_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/what_is_a_neon_santa_dog_worth_in_adopt_me.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_off0000ef9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9D 5228 bytes
SHA-256: 0482dec07a7bd199a4647324ad9409cd27eaff46183f83f34150a997fe2b6370
font_01_sfnt_off0001016e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016E 11248 bytes
SHA-256: 03588e1b2394fe00a099450b3f11a434cf77f9da882ddb060f9eef136f647e0b

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