Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2fa6ecb32ce122…

MALICIOUS

PDF

82.5 KB Created: 2021-04-06 13:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f900e6c61b2ec84dee6118c65aa839ca SHA-1: 82f0cceacfb42a7bbcf255222d61026d206a23ab SHA-256: de2fa6ecb32ce12230b9fee7e0a9f444fbd36c1ad245df324cfc9a3f973cde80
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs, with a high concentration of links pointing to disposable hosting services, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to lead the user to a compromised or malicious site. While no scripts were explicitly extracted, the structure and embedded links are indicative of a malicious lure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://resalured.ru/award?keyword=ahlat+a%25C4%259Fac%25C4%25B1+kitap+pdf PDF link annotation
    • https://mejojesakawevud.weebly.com/uploads/1/3/1/4/131438193/kerulil_puregukejubib_ripoxagexu.pdfIn PDF document text
    • http://jaralimejisu.iblogger.org/star_trek_discovery_season_3_episode_11_full_episode.pdfIn PDF document text
    • http://lizetadolanut.iblogger.org/l_islam_et_la_science.pdfIn PDF document text
    • https://mimoleratamofip.weebly.com/uploads/1/3/4/5/134500060/d65d2be.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/roxakebojuteweguf.pdfIn PDF document text
    • https://cdn.sqhk.co/novigigexuxo/7gf8xRW/nowhere_to_run_full_movie_free.pdfIn PDF document text
    • http://setifol.66ghz.com/60136465264.pdfIn PDF document text
    • https://kizuwapeputatu.weebly.com/uploads/1/3/4/3/134375201/87932dc46.pdfIn PDF document text
    • https://cdn.sqhk.co/godajaxox/GSigTU4/36636165094.pdfIn PDF document text
    • http://natusab.22web.org/ronal_the_barbarian_full_movie_mp4.pdfIn PDF document text
    • https://fejejupusojovif.weebly.com/uploads/1/3/1/4/131483068/balikukegasafo_neselobiwa_bigobin_xovom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://regipikiwubadov.epizy.com/65692910337.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84ded1be-5eea-41f9-aba2-939ef707e01a/dymo_labelwriter_450_twin_turbo_error_printing.pdfIn PDF document text
    • http://mubaviz.epizy.com/47188333731.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/74937863659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/638472ec-6f18-4f3b-8fcc-6a91711e82a9/modern_family_season_1_episode_3_script.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/76790837110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b845fc7-4970-44f2-ae83-43d6147ee95c/rixoxinovarapinitikiwo.pdfIn PDF document text
    • http://mumamame.rf.gd/biology_book_class_11_bengali.pdfIn PDF document text
    • http://buzapodux.rf.gd/how_to_use_cricut_to_make_stickers.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/hp_officejet_7110_wide_format_a3_eprinter_specification.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/socratic_seminar_to_kill_a_mockingbird_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c5a5e70-c483-46ae-8911-c8ee37ca04ec/julius_caesar_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4340f645-5ad0-4672-8f73-88827639bcd7/50885359739.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_off0000ff6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6F 5284 bytes
SHA-256: 4882b1515b1d7eeed7b4f9220662c79aa62927905d722c2207e99bfec1a66ecc
font_01_sfnt_off00011176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11176 13488 bytes
SHA-256: c4ddcfd61ac91f4c24871e9c1ab0d24158ff561269621e068de9c677c9f5fbff

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