Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ce4951eab664827…

MALICIOUS

PDF

130.9 KB Created: 2021-03-20 15:23:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 95e23bf72c0280f6b727df88b4da39ce SHA-1: 575ca369a77aeedf254ffc37a2679ad767c9b20b SHA-256: 5ce4951eab664827ed28c6527280daccffd629327bd411aee12b0948350300f6
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/123?utm_term=animoji+app+for+android PDF link annotation
    • http://nurokojo.mypressonline.com/lururisofuduzitisakanujo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458388/normal_605333ba3c613.pdfIn PDF document text
    • http://dimopun.mywebcommunity.org/94259425182.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447108/normal_602e83c160096.pdfIn PDF document text
    • http://coins24h.com/how_to_make_a_deep_house_track_in_logic_pro_xgjl98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369315/normal_6042aec18639b.pdfIn PDF document text
    • http://xtreme-sport.ru/difference_between_descriptive_and_narrative_essay_slideshare6mscx.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/66213447010.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/the_miseducation_of_cameron_post_christian_review.pdfIn PDF document text
    • http://lajafago.medianewsonline.com/dr_kambikuttan.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/hermosas_criaturas_libro_saga_completa.pdfIn PDF document text
    • http://hookup754.fun/how_to_join_premium_servers_with_cracked_minecraft_2020e75ad.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/ce462976-5d0e-4a05-9d95-74ff0d533127/bean_bag_toss_game_score_keeper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c0db50-74b6-444c-bb7e-a425ec96f09f/vuwofaloximiridotoso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38742869-e3a9-4dfb-a1b7-8a2907fadc86/xazigesisujusezovop.pdfIn PDF document text
    • http://vukokudu.rf.gd/69805422118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cf386b5-52ad-44d3-8b39-d8ed6cb8887c/how_do_i_reset_my_oven_control_board.pdfIn PDF document text
    • http://bedopevidorofi.myartsonline.com/nevidotazadixajifot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff32adc6-f45e-4d78-a2cc-5c16b95ef226/how_to_contact_nespresso.pdfIn PDF document text
    • http://fevanazenanow.rf.gd/19417125178.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_off0001c64a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C64A 5040 bytes
SHA-256: 468b0ae537e835c873d7bb3d05ddcd9e24cd5fde01f75f58316566dbbf3a871d
font_01_sfnt_off0001d75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D75E 11568 bytes
SHA-256: 4c93cc803f1569909ee19d2ceb63b3b993350b5d62d5eeb1f2946977407326ab

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