Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1d628d69bb774e…

MALICIOUS

PDF

79.9 KB Created: 2021-03-22 23:01:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 39065f09edc53ca7ea12c04941424664 SHA-1: b041057312e8ce183406ea10db9630d2d6f16b1e SHA-256: ca1d628d69bb774e081e2fba63c585deb458c97af12bdbbf3b499da94bd1723c
186 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of a phishing lure. It attempts to trick users into providing sensitive recovery information, likely to facilitate account compromise. The document contains multiple embedded URLs, with one pointing to a suspicious domain that appears to be part of a link farm designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/wix?keyword=can%2527t+take+screenshot+due+to+security+policy+facebook+app PDF link annotation
    • https://gebapawuvafiv.weebly.com/uploads/1/3/4/5/134519736/4c344a33518978b.pdfIn PDF document text
    • https://vawavujak.weebly.com/uploads/1/3/4/3/134350312/6568325.pdfIn PDF document text
    • https://cdn.sqhk.co/guwaloxipete/jar6hbx/magic_lantern_camera_list.pdfIn PDF document text
    • http://manudagubik.22web.org/3305226256.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/FSIicja/zazefi.pdfIn PDF document text
    • http://goossyy.online/70479609740xk43t.pdfIn PDF document text
    • http://buxosuloxe.iblogger.org/pofuzisujudedifidulim.pdfIn PDF document text
    • http://life50it.pro/d_link_dsl_2730u_configuration_bsnl_broadbanda4s93.pdfIn PDF document text
    • http://goodnatural.space/mystic_dreamer_tarot_book2vzdo.pdfIn PDF document text
    • http://fumexijana.getenjoyment.net/how_do_i_connect_my_verizon_wifi_extender_to_my_router.pdfIn PDF document text
    • http://instapresent.site/what_is_the_best_english_speaking_courseip54m.pdfIn PDF document text
    • http://fumizudo.sportsontheweb.net/effects_of_poverty_in_nigeria.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/the_practice_of_adaptive_leadership.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogoxuf.atwebpages.com/riparos.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/no3_lewis_structure_with_formal_charges.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/89136435580.pdfIn PDF document text
    • http://rafodize.rf.gd/xasajugijaxi.pdfIn PDF document text
    • http://zerarex.epizy.com/amazon_software_development_manager_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/bahubali_songs_telugu_320kbps_free.pdfIn PDF document text
    • http://delixerilebuk.epizy.com/rosario_dela_coronilla_dela_divina_misericordia_cantado_completo.pdfIn PDF document text
    • http://lapetagalelan.myartsonline.com/how_to_install_myq_smart_garage_door_opener_chamberlain_myq-g0301.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_off0000f709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF709 5488 bytes
SHA-256: a536efc9b8d0a7702a9ff1bf209b1fa5b97bf801e029ac08c4a674285924b323
font_01_sfnt_off000109b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B5 11056 bytes
SHA-256: 8598005fb8d2d6f837759f3d9c23911509dd4a4a33ad2fe489c00d4e81a5c014

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