Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e8bfa9de0a1da5…

MALICIOUS

PDF

80.1 KB Created: 2021-03-20 01:00:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bcc268ff763571cfa2dee44713ca613e SHA-1: 91602bfcc1eaf172b14e282e263083fdb98abc0a SHA-256: e2e8bfa9de0a1da54b8fb0c99ca9041ee080194643d58e9009eca55d376c10fc
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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/strik?utm_term=sarah+jane+adventures+the+mad+woman+in+the+attic+cast PDF link annotation
    • http://sberpodarok2020.online/xoluvatuwutofofalz6lj6.pdfIn PDF document text
    • https://cdn.sqhk.co/midipijikami/haLbWha/radio_kiss_fm_online_live_romania.pdfIn PDF document text
    • https://delimilakemasuj.weebly.com/uploads/1/3/4/4/134400920/8747839.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490528/normal_6018a6b2e5c2b.pdfIn PDF document text
    • http://golden-bridge.pro/the_complete_book_of_hymnsl8wfq.pdfIn PDF document text
    • https://buzotenugi.weebly.com/uploads/1/3/1/4/131408099/1714605.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501214/normal_6001f3651fb8b.pdfIn PDF document text
    • http://lastmarkt.ru/expanding_and_simplifying_brackets_worksheet_gcse63l85.pdfIn PDF document text
    • https://cdn.sqhk.co/wifurovud/EjjIhcD/best_music_ringtones_tamil.pdfIn PDF document text
    • http://gesaresato.iblogger.org/blue_moon_elvis_ukulele_chords.pdfIn PDF document text
    • http://usmileofficial.site/caballo_de_troya_j.j._bentez_saga_completa5uclx.pdfIn PDF document text
    • https://wuliwedifa.weebly.com/uploads/1/3/4/7/134753749/monurexo.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/bghvibS/forgotten_hill_tale_portrait_walkthrough.pdfIn PDF document text
    • http://goods-amzon.com/jorenowefis4hdy9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pudunajuge.rf.gd/callablestatement_jdbctemplate_example.pdfIn PDF document text
    • http://salivokeru.epizy.com/fukesawike.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/rigipofibabosowaguxofo.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/how_to_make_brisket_in_an_electric_smoker.pdfIn PDF document text
    • http://xeniwurupig.rf.gd/windows_10_free_student_upgrade.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/fedixuxepurama.pdfIn PDF document text
    • http://fofuxolisemaxim.epizy.com/90662817730.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/3d_haunted_house_template_printable.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_off0000f93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93A 5480 bytes
SHA-256: 02931f3900986563446ebb634ca32893557754d170ab8bc0a331add65a0852a4
font_01_sfnt_off00010bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCD 11464 bytes
SHA-256: 9d43df76c56564ea4b8b969b9cf91d6e100452dc453269682cc15b58e439d534

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