Malicious PDF — malware analysis report

Static analysis result for SHA-256 24960c901f9a3eee…

MALICIOUS

PDF

69.1 KB Created: 2021-04-03 19:09:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b248d3af51b81c5c4debbcd73f467b71 SHA-1: 569fe81eed15074bf19a3bc89029a428550ff9d2 SHA-256: 24960c901f9a3eee2b725bd4cad3925c933d21379577d9cd851e04fedc97ffe3
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 0.9996

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://lozipotod.ru/award?keyword=ashtanga+yoga+poses+pdf+download PDF link annotation
    • http://vykupavto54.ru/auria_pro_apk4hgkv.pdfIn PDF document text
    • http://bestplacefor.rest/amanush_bengali_movie_720pem0nd.pdfIn PDF document text
    • http://kernig.store/logo_quiz_game_online_free1fvoi.pdfIn PDF document text
    • http://edarudost.online/feminaredalas3603.pdfIn PDF document text
    • http://tehnoprom.org/44960890946kvr87.pdfIn PDF document text
    • http://keto-s1.com/38438823459zcl0v.pdfIn PDF document text
    • http://vezadawebowa.iblogger.org/64588109777.pdfIn PDF document text
    • https://cdn.sqhk.co/difakezil/eidM3Fh/risk_matrix_table.pdfIn PDF document text
    • https://cdn.sqhk.co/zalenemu/iidfHt9/ir_spectroscopy_principle_and_applications.pdfIn PDF document text
    • http://zotuxizuso.iblogger.org/equidad_e_igualdad_educativa.pdfIn PDF document text
    • http://nutristrike-shop.ru/free_multiplication_coloring_worksheets_grade_3ib1z9.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/ghfdVOg/womitar.pdfIn PDF document text
    • http://netewe9.xyz/high_probability_trading_strategies9kco1.pdfIn PDF document text
    • http://duplicwcnj.space/relekoiacdd.pdfIn PDF document text
    • http://tovarajuxelogag.iblogger.org/james_cameron_s_avatar_the_game_psp.pdfIn PDF document text
    • http://ru-en.xyz/homemade_facial_mask_for_oily_skin_and_pimplesg3lwo.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/ce8b33cf-2e72-4b59-a3fe-c3fbf66f9440/gupakiligidaxenum.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/stand_apart_meaning_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37214dc6-5791-47b0-87b0-33997069ab8b/54479959599.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/briggs_and_stratton_vanguard_18_hp_v-twin_repair_manual.pdfIn PDF document text
    • http://nizalag.rf.gd/lagovajobepija.pdfIn PDF document text
    • http://pujusojup.epizy.com/god_of_war_psp_game_zip.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_off0000cf31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF31 5392 bytes
SHA-256: 35fd3cf5c8b92297a7d585ff67f2d0f7fb774c3909548f157c298ba79cc70a90
font_01_sfnt_off0000e1ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AB 11456 bytes
SHA-256: 29b63539c1e0e8c0e55829830a74eb65f9d626c1a3048e7cf4d8521f58e10023

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