Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2901e01db91b54…

MALICIOUS

PDF

84.2 KB Created: 2021-05-20 11:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 022a5d4d7c6fb9ed9317d26139a7cf82 SHA-1: 7e8c6b114457e7092285d8bdb22ba397ed37e2c4 SHA-256: fe2901e01db91b548868e2c772c01bd3234f67e82c8f467b5e7c70fd5f372e99
196 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Skam espana season 3 episode 1 english subtitles' and embeds multiple external links, including one to 'xajibur.ru'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm or redirection mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xajibur.ru/strik?utm_term=skam+espana+season+3+episode+1+english+subtitles PDF link annotation
    • https://nokidekuget.weebly.com/uploads/1/3/4/6/134669445/09471eca619.pdfIn PDF document text
    • https://bimozasobo.weebly.com/uploads/1/3/1/3/131398313/duvixusipurexijab.pdfIn PDF document text
    • https://mapunexi.weebly.com/uploads/1/3/3/9/133999872/2206599.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/lanaladu/baretugoweruxufubime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fc79d84-c7b3-4519-8add-2e5e66ede88f/gominupuloxipezimak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e382b134-e277-4cbc-9701-a352f5309625/the_kingdom_of_god_is_within_you_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d80f55e1-3fd9-4f3b-9dd2-7363bef35c4d/69283394328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9fe2c4e-7b85-4796-a20c-7c2cc4066150/26255707888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3823874a-33b6-4792-93b5-5df91e20e267/losing_song_price_is_right.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91d10fdc-834d-4cb5-a0bd-16848460e126/76112213341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1e83558-2abb-459e-9be5-40123a0a3e46/2014_mazda_3_sp25_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d41e9f1b-6bab-4b1d-8af0-d35501a8e5ca/lo_que_no_te_mata_te_hace_mas_fuerte_frase_nietzsche.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e60dd5c-9456-4efa-ba2d-301ed4aa15b3/how_to_use_star_finder_np_323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39925299-0977-4c2f-8815-6a3a2a1b7379/singer_328k_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ebb17a9-5f4d-4674-97b9-9696155f7eab/who_made_up_the_first_estate_in_the_french_revolution.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/the_hangover_3_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/automatic_or_manual_2014_mustang_gt.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/barley_powdery_mildew_fact_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e830e3ee-1f7c-4061-b68c-7ed918725a1d/last_of_the_mohicans_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa678853-c8c9-44b6-b038-23791e1915a8/how_to_use_flysky_transmitter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1501c5f8-4e99-4d00-acdb-42bc221c2a6a/48697711147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21ea2c58-931d-447d-af56-8093f1b3e2f1/gakawuzurilanagos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7a46b8-fe87-4a35-8511-cd1ff01d4f1b/does_taco_bell_serve_full_menu_at_breakfast.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_off000106e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E8 5800 bytes
SHA-256: 1cfe0005636f3430a7515b3cf6e27c4b218d9e52ffe7f654ad1d2141560e3368
font_01_sfnt_off00011a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A89 12524 bytes
SHA-256: eafe7f8d13caaac6244b2eeef47a8a5b510597e62319a3a3b7bd92ce86c787bd