Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abe985835284b49…

MALICIOUS

PDF

74.1 KB Created: 2021-03-20 10:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: dfbc524d014e9dc2ed554d68fed29136 SHA-1: da47454d40188970a5ffe6f2576a9083e84e60de SHA-256: 6abe985835284b491859de398fdc13b8fa6c9a8fc79239eb78fe753bab38ca01
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with the primary one being 'https://soxebez.ru/award?keyword=trastorno+asperger+pdf'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is part of a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/award?keyword=trastorno+asperger+pdf PDF link annotation
    • http://bikelumonekodex.mygamesonline.org/golds_gym_xr45.pdfIn PDF document text
    • http://smirnoff-optic.com/childrens_books_written_before_1900e4r3w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421641/normal_6024aa59a68ab.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/tB1iiar/happy_birthday_orange_cat.pdfIn PDF document text
    • https://cdn.sqhk.co/xoguvamev/hawZXDr/off_road_expedition_land_rover_for_sale_uk.pdfIn PDF document text
    • http://ruseseru.iblogger.org/guide_des_gravures_essilor.pdfIn PDF document text
    • http://igoscandinavia.com/altered_carbon_season_1_trailer_hindi6tp46.pdfIn PDF document text
    • http://geosen.net/appendix_16_form_of_transfer_certificate342sz.pdfIn PDF document text
    • http://uabiomanix.xyz/havoc_brothers_tamil_album_song_audioox7h4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455914/normal_5ff4ff8800d23.pdfIn PDF document text
    • http://pepariravifaza.getenjoyment.net/mtabolisme_des_protines_et_des_acides_amins.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/desh_bhakti_all_ringtone_free5d3ho.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/9917adee-97a4-4ec7-8eb3-b33d19a89d56/how_many_versions_of_deadpool_2_are_there.pdfIn PDF document text
    • http://sejedusodumevu.epizy.com/xenap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae22ab1d-cb34-4ec7-8122-07205c1bb6fc/48317957531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa5d1a0-0933-459c-b06c-33e3c1f0f695/sex_offender_list_lafayette_indiana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d27bab-90c6-40e9-9194-4b08fd3cbb9c/house_tree_person_administration_instructions.pdfIn PDF document text
    • http://mijikudetixo.epizy.com/suxixelep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742fd592-ddb1-4f57-bdca-5076caa4268c/9990490501.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_off0000e6d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D6 5124 bytes
SHA-256: 10db004e4b344ea4180d12f95801a50f76a07f64a6ebbbc4334540bf0a16a33e
font_01_sfnt_off0000f851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF851 10324 bytes
SHA-256: a15026a84dcf8700b20fc7d1632409da6e93cfdf980588386da667159418682d

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