Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab3bd454336a209a…

MALICIOUS

PDF

81.7 KB Created: 2021-03-15 15:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dfedfa89034cd6ddf69f565c651ab0a4 SHA-1: 09544a8e89303b76d40bfd43bb33c76eb61c921d SHA-256: ab3bd454336a209a3bc205d9e23ce1b469e0943ae13cf4004c777a211255e00a
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-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://bologen.ru/strik?utm_term=neurolinguistisches+programmieren+beispiele PDF link annotation
    • https://cdn.sqhk.co/fenazijeguk/f8Y4kja/google_sheets_combine_arrays.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/jjhbcFS/9pm_football_managers_y_lmaz_vural_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481173/normal_6038fd824eec6.pdfIn PDF document text
    • https://cdn.sqhk.co/gidenateg/ljhpYbA/93138905549.pdfIn PDF document text
    • http://bomufofo.iblogger.org/how_to_boarding_pass_spicejet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454436/normal_600457cfb3ebc.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/iggcDlA/mirror_glaze_cakes_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/sevilebup/aHPijia/captopril_davis_drug.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/b7jhjeK/world_basketball_challenge_unblocked_66.pdfIn PDF document text
    • https://cdn.sqhk.co/nokowifupe/jjdvicZ/lafiropafibuzogulin.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/signos_y_sintomas_del_cancer_de_ovario.pdfIn PDF document text
    • https://cdn.sqhk.co/dorumexogik/X3npcgh/grumpy_cat_christmas_cast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486033/normal_603b2275cd57a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_604d29e7664eb.pdfIn PDF document text
    • http://bukobaxaz.getenjoyment.net/fallen_lauren_kate_full_book_online.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/gPehgbn/sword_of_shadows_pg3d.pdfIn PDF document text
    • http://pusewuvi.medianewsonline.com/bryant_plus_90_secondary_heat_exchanger.pdfIn PDF document text
    • https://cdn.sqhk.co/bemaxopig/ghRhcdQ/download_horror_wallpapers_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/eYid7Pa/my_cloud_home_duo_4tb_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mesobeku.epizy.com/what_is_project_management_office.pdfIn PDF document text
    • http://lexonizotani.rf.gd/49866976794.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_off0001000e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000E 5456 bytes
SHA-256: 6767cb36e0253e2ddc47b7e8a369d6ab7f4062a819b528932430146dccc04003
font_01_sfnt_off00011277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11277 11320 bytes
SHA-256: 5dbea7406a329c14a78f87ae010dd0b3cb8b62e2f363c26a86cc16ecc424a2fb

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