Malicious PDF — malware analysis report

Static analysis result for SHA-256 93784f030fdb88c9…

MALICIOUS

PDF

81.9 KB Created: 2021-03-15 17:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1ffec469cc124e3b4fae26d37f133f39 SHA-1: 532631de62a42d1fbc96e6266b7dfb3f662d69f4 SHA-256: 93784f030fdb88c9bd6b164255dbbdcc86db9022e27271eccbea282e1d500f23
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 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=gray+s+biopsychological+theory+of+personality+pdf PDF link annotation
    • http://oneitstore.info/boss_dr-550_mk2_review5bwpa.pdfIn PDF document text
    • http://changely.club/white_rodgers_thermostat_display_light_not_workingpq179.pdfIn PDF document text
    • http://greyfruit.space/2007_chevrolet_impala_lt_3.5l_v6_flex-fueluhvww.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451555/normal_603b86948995a.pdfIn PDF document text
    • http://myfavoritesun.xyz/30008150474lkb4v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424043/normal_60008973bccae.pdfIn PDF document text
    • http://fruct.space/abilene_reporter_news_high_school_sports1lt6f.pdfIn PDF document text
    • http://salearea.pro/355633392822i47x.pdfIn PDF document text
    • https://febovaze.weebly.com/uploads/1/3/4/1/134131302/zemoriba-vunobirubebav.pdfIn PDF document text
    • https://balejumefem.weebly.com/uploads/1/3/0/8/130814467/76afb374.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/25262187232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489259/normal_60469ffc97c47.pdfIn PDF document text
    • http://axecheat6.xyz/89817290724vyf6i.pdfIn PDF document text
    • https://monotolifevi.weebly.com/uploads/1/3/4/6/134683372/2b0d12981e.pdfIn PDF document text
    • http://vizojuzoninunoz.scienceontheweb.net/witcher_season_2_release_date_imdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460968/normal_602fe03f1b144.pdfIn PDF document text
    • http://jewogipuwivi.medianewsonline.com/ap_chinese_barrons_book.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/vavabi/que_es_kilocaloras_en_quimica.pdfIn PDF document text
    • http://bememikat.onlinewebshop.net/sultans_of_swing_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/android_17_18_leader.pdfIn PDF document text
    • http://wegamaluperetuj.atwebpages.com/how_to_get_rid_of_a_rash_on_my_newborns_face.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/arlo_pro_2_manual_recording.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/formal_wear_hire_northern_beaches_sydney.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/jokojuwodidusefudotazawe.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_off000100e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E0 5692 bytes
SHA-256: 5d40ac051683e3c544c97598d405a3c79282ab402fb5af10eddc4480a338d047
font_01_sfnt_off0001143b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1143B 11432 bytes
SHA-256: 22ea016b993c8119bdc5ecf62609172a5cef02b41a66f1fef2379d6e2f835b31

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