Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb5ae1c33818d2b…

MALICIOUS

PDF

68.1 KB Created: 2021-02-25 21:42:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8f9e4eb464755264f23ee25643f10509 SHA-1: b57bd6ec41ec3008c39f27aad9bf8061ebf1fcac SHA-256: 8fb5ae1c33818d2b0e241cd8f5f7f81bc6242e1104620cf2be9ec3b2d42ee99d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/award?keyword=briggs+and+stratton+vanguard+23+hp+horizontal+engine PDF link annotation
    • http://organicnu.info/donny_mccaslin_eye_of_the_beholder_lyricsxu394.pdfIn PDF document text
    • https://jetosiwer.weebly.com/uploads/1/3/4/7/134767378/9924540.pdfIn PDF document text
    • http://zosujobitusup.iblogger.org/wilis.pdfIn PDF document text
    • http://lady-bug.club/bobevanezitonusudhhas.pdfIn PDF document text
    • https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/mibizu_semevomawomoda_wodogewijotajed.pdfIn PDF document text
    • https://jimiwijir.weebly.com/uploads/1/3/4/5/134525211/rukedavuditebi_liroxus_nopob_lexoxe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fanutebuxus.rf.gd/third_negative_speaker_template.pdfIn PDF document text
    • http://dokubuxopid.rf.gd/afro_house_sample_packs_free.pdfIn PDF document text
    • http://puwomuf.rf.gd/swot_analysis_word_template.pdfIn PDF document text
    • http://wuduzukatej.epizy.com/new_moon_day_in_january_2021_in_india.pdfIn PDF document text
    • http://rivobuzuxi.epizy.com/subosibosowefuvobiluvojag.pdfIn PDF document text
    • http://firabano.epizy.com/cinema_4d_materials_pack_free.pdfIn PDF document text
    • http://faxarase.rf.gd/46310570965.pdfIn PDF document text
    • http://wakojemoxu.rf.gd/grimoire_meaning_black_clover.pdfIn PDF document text
    • http://tazodeb.epizy.com/bomezajufaveza.pdfIn PDF document text
    • http://gejevebo.epizy.com/project_evaluation_matrix_template.pdfIn PDF document text
    • http://bukumetaboxalo.epizy.com/how_to_scan_from_brother_printer_to_windows_7.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_off0000cdf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF3 5676 bytes
SHA-256: 36803b45b67a793d388de7fa577656548b1a0c36e68ab71990869f6644f8100c
font_01_sfnt_off0000e14f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14F 9848 bytes
SHA-256: 69014c63bd5657d058fd75c697fa77d52caf7e98b76fbde3a3f3f645ed7aca56