Malicious PDF — malware analysis report

Static analysis result for SHA-256 30010565a009562f…

MALICIOUS

PDF

74.6 KB Created: 2021-03-16 05:34:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d4e4c130f4763ad6dcdc3fc7d886d09c SHA-1: 28311741f4c3e1b55cca8ebff0edf237d9c0779d SHA-256: 30010565a009562f2736327872a23c677a0569fdc7a029afbe952884e072846a
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL, 'https://jottigo.ru/award?keyword=buchungss%25C3%25A4tze+beispiele+mit+l%25C3%25B6sungen+pdf', appearing to be a lure disguised as a document related to booking examples. The presence of many disposable domains and link farms suggests a phishing or spam campaign aimed at driving traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jottigo.ru/award?keyword=buchungss%25C3%25A4tze+beispiele+mit+l%25C3%25B6sungen+pdf PDF link annotation
    • http://zagunur.22web.org/the_accused_movie_480p.pdfIn PDF document text
    • http://kewujedirolut.22web.org/1012320123.pdfIn PDF document text
    • http://wemepena.iblogger.org/leona_guide_champion_gg.pdfIn PDF document text
    • https://dobuzitususuv.weebly.com/uploads/1/3/4/4/134470967/gevenezixa.pdfIn PDF document text
    • https://teraxawazolazov.weebly.com/uploads/1/3/4/3/134386914/jivufevazajabexomefu.pdfIn PDF document text
    • https://rizogedimawe.weebly.com/uploads/1/3/0/7/130739598/kivaxuzi-jitosa-nekir-xisipu.pdfIn PDF document text
    • https://zipawesijapa.weebly.com/uploads/1/3/4/4/134494223/xasusexobez.pdfIn PDF document text
    • https://femomupine.weebly.com/uploads/1/3/4/4/134458898/1270803.pdfIn PDF document text
    • https://jazelisis.weebly.com/uploads/1/3/4/8/134870131/9065146.pdfIn PDF document text
    • https://mafaredoli.weebly.com/uploads/1/3/2/6/132695491/5884886.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lowubav.rf.gd/will_there_be_an_8th_book_of_harry_potter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b157b7-75c3-48fa-855d-694a51208c34/sujusel.pdfIn PDF document text
    • http://pimurif.rf.gd/how_to_install_hp_printer_2132_without_cd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/366fe517-259a-4fa3-8a99-3b77a2b34ed2/xbox_360_s_eject_button_not_working.pdfIn PDF document text
    • http://xofenilar.epizy.com/jatekis.pdfIn PDF document text
    • http://dutugege.epizy.com/all_bollywood_songs_mp4.pdfIn PDF document text
    • http://mubufelijora.epizy.com/99689370648.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99140975-12b3-486e-b07c-4c245ef1bfd6/survival_horror_games_pc_2020.pdfIn PDF document text
    • http://zewipurorafe.epizy.com/qu_significa_la_palabra_ixim.pdfIn PDF document text
    • http://zarezelokuka.rf.gd/21784732923.pdfIn PDF document text
    • http://vupafigimewex.rf.gd/58916611919.pdfIn PDF document text
    • http://jogufek.epizy.com/faithfully_guided_health_center_ocala_fl_34471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b6b3de5-320c-42cf-9089-4a1c199f0ac5/nextbook_flexx_11_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0acc73a-838c-4b64-ac36-928f5f23d97b/la_iliada_personajes_y_caracteristicas.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_off0000e1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A9 5876 bytes
SHA-256: 94efcebccbc70b2a22ecdbdc96306683e407dc51debb26973a816ec7b0f9b06c
font_01_sfnt_off0000f54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54A 11356 bytes
SHA-256: 1a33d64ee4bc07e9f04bd8407e80e0ab3c963c1baa552c32e53bb8343c8782f3

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