Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ca4f83adee08db…

MALICIOUS

PDF

82.6 KB Created: 2021-04-13 02:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 559fdcb019c36a454be2d1dcf75a2650 SHA-1: 5ae98957ae58fa02a7e69f638f986b1910aa4254 SHA-256: 14ca4f83adee08dbc1ac09a4bb2ec2a39a51bb0b488963e07ceb60044b001a7f
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 0.9991

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://xezojetit.ru/strik?utm_term=hp+laserjet+p1606dn+change+ip+address PDF link annotation
    • https://cdn.sqhk.co/fujotojaxob/dgdBOVt/boris_and_the_dark_survival_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/bgcmhdw/kamiluzovulibura.pdfIn PDF document text
    • https://cdn.sqhk.co/fazovivum/gfhdrid/mafevixenitenadefir.pdfIn PDF document text
    • https://cdn.sqhk.co/lidojuxuxiro/4ibhcTR/smartsheet_conditional_formatting_compare_columns.pdfIn PDF document text
    • http://bexixibeguben.sportsontheweb.net/46956818675.pdfIn PDF document text
    • http://natelobupug.iblogger.org/15224505325.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/O6ihu74/jokakulofovabujiguburi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0b53910b-bcaf-41bc-84b0-74f66a6d9b49/new_testament_books_date_written.pdfIn PDF document text
    • http://josekopiguvalup.epizy.com/adeste_fideles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b80e130f-a99e-4831-a7d8-345374f137df/of_fathers_and_sons_movie_online.pdfIn PDF document text
    • http://mumamame.rf.gd/50879766649.pdfIn PDF document text
    • http://xokovuwewa.epizy.com/recuerdos_de_la_alhambra_guitar_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/best_book_to_learn_how_to_draw_faces.pdfIn PDF document text
    • http://zoxebavin.rf.gd/rizusejopinasakip.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/girovola.pdfIn PDF document text
    • http://wotikuvejuf.rf.gd/how_to_calibrate_a_fluke_561_ir_thermometer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a0dcb0f-9fe1-43a9-a7b0-b1175a20ae90/zalopetodegebovijegizat.pdfIn PDF document text
    • http://vebusatoro.atwebpages.com/99827984729.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/understanding_media_the_extensions_of_man_1964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/220847ff-e9b9-49b5-aaa9-400ad6dabc97/zuwakulibepirevinatof.pdfIn PDF document text
    • http://jifadeve.rf.gd/55993745752.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/what_is_the_master_cleanse_lemonade_diet.pdfIn PDF document text
    • http://nerepigov.rf.gd/nccn_guidelines_prostate_cancer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C2 5400 bytes
SHA-256: 41c458098c21daf15937469beb292d551af9aa4ced67e18374d16faf2e7312a5
font_01_sfnt_off00010b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B12 10428 bytes
SHA-256: ff53771d6ac625c271ad8c1681378179912b0d5a719fe919df0ea040f4cb58ef
font_02_sfnt_off00012e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E4C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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