Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bbe9f0cccbb7acc…

MALICIOUS

PDF

75.5 KB Created: 2021-06-09 00:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 472978fe196695407ca888d7561e635b SHA-1: e8fabf8a48c6caed56ca91c364b8ae00d7e0019a SHA-256: 4bbe9f0cccbb7acc2d11c9c257dd5292ff3d03835cfe9ee24e53997cbd141492
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many of which are part of an SEO link farm designed to redirect users. The primary lure appears to be a fake download for 'Minecraft in game auto clicker', leading to a suspicious URL. Heuristics and ML classification strongly indicate malicious intent, specifically phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://catamma.ru/pbw?utm_term=minecraft+in+game+auto+clicker PDF link annotation
    • https://gulemexaw.weebly.com/uploads/1/3/4/3/134360266/55cda628d7401.pdfIn PDF document text
    • https://magirodimape.weebly.com/uploads/1/3/1/6/131637482/lubodasojimaba-luximixisuxofit.pdfIn PDF document text
    • https://puwijupuf.weebly.com/uploads/1/3/4/7/134701632/3180418.pdfIn PDF document text
    • https://ninadagonalot.weebly.com/uploads/1/3/4/6/134668818/07da9d9d2.pdfIn PDF document text
    • https://gitutibilaralib.weebly.com/uploads/1/3/1/3/131384503/2428718.pdfIn PDF document text
    • https://lozezuxugi.weebly.com/uploads/1/3/4/0/134016676/vefupebelazagip-gupibujat-liruretedef.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/8030f902-1e12-4569-842f-00c90e7bc421/wodulaxutubiwob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ab38cf9-9bae-4892-a078-d275926629da/how_to_quote_air_freight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30a220bc-a2cd-41c6-9503-c501449575bc/91556255646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ed25945-995e-4789-ab06-fa69d6fbdd22/comunicacion_efectiva_segun_autores.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94cca1d1-4b91-4208-a542-0e716533c82a/stanley_1_gallon_wet_dry_vac_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac5a8056-8d18-4dbd-9869-b96214dd937d/the_school_donald_barthelme_postmodernism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5d22c52-b63a-4ec3-bf55-86e9334d9564/12264931432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fd46f14-bcc6-4cd6-8702-3faafc493fb3/survival_kits_for_sale_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25d8eabb-9978-4a09-9452-f8b7a8c757c7/att_velocity_wi-fi_hotspot_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0913c63e-630e-4683-895a-e9b927a3991a/leaked_skins_pro_game_guides.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/875bc539-9116-415a-b59c-088ae38c36f1/contract_law_cases_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11497b84-6948-4d90-b2bf-dc825916bf36/2016_lexus_gx_460_curb_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eda73c2-3e5a-4749-9561-f4531e1e6aa7/hp_officejet_6500_wireless_replace_ink_cartridge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6486eadd-3db6-4c3f-9e65-18e2f9efaf1d/formula_quimica_del_lauril_sulfato_de_sodio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35ae3928-b251-4cd6-b1bb-a17be0f76ce8/night_owl_wired_4-camera_security_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5a3f921-fdd5-4ce2-ab25-a3d500940f7b/indian_railways_latest_news_today_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d57491ff-bd33-4514-82b3-d7cb107bdf49/penizatokupudupegagala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b208db54-440e-4737-9e87-d1f8fd2c238a/95337444968.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_off0000eaf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF5 5092 bytes
SHA-256: d6501fef692348eba64d8c022a100d501fd63280cd89bcf3e43fee84a72d957c
font_01_sfnt_off0000fc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC46 10764 bytes
SHA-256: 5c603370282ba949b643eb8400e7ccecf7364357180e1c1f30c8ee5f64dcccd1

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