Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f3c865da4c3c00…

MALICIOUS

PDF

75.0 KB Created: 2021-03-05 07:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 830115f00bcb0fd479f9aa4bbef48d82 SHA-1: c8d64a5c655be39ea2fcbe271d829aeca0e78758 SHA-256: 02f3c865da4c3c0028a17be57c97c5313691170a493129c876deb3c3fc8296c2
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 0.9995

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://seumenha.ru/award?keyword=why+do+you+feel+the+way+you+feel+brainly PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489734/normal_5ff339001261e.pdfIn PDF document text
    • http://vash-komfort5.ru/97715434569zb7fw.pdfIn PDF document text
    • http://werenntaq.online/les_miserables_movie_2020_trailern78x8.pdfIn PDF document text
    • http://vabizosod.22web.org/cafe_astrology_free_numerology_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5fd7df41a30b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418381/normal_602b289c93c65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453551/normal_5ffaa77621fb0.pdfIn PDF document text
    • http://amandeepsadyora.com/pokolavabiwivikiseje40xvm.pdfIn PDF document text
    • http://minuette.me/97965431461dg55q.pdfIn PDF document text
    • http://leseweremizew.scienceontheweb.net/will_there_be_a_sequel_series_to_star_wars_rebels.pdfIn PDF document text
    • http://csxmoney.info/blodgett_convection_oven_instruction_manualrwslh.pdfIn PDF document text
    • http://idealica-co.site/android_police_free_appskrsfg.pdfIn PDF document text
    • http://pshcomonhere.xyz/portalciyiz_minecraft_indir_1.8.9em7en.pdfIn PDF document text
    • http://iuts.space/inanlmaz_rmcek_adam_indir92tnc.pdfIn PDF document text
    • http://filmera.ru/mu_n_xin_thi_gi_chc_v_b_thwn4tf.pdfIn PDF document text
    • http://busimaderule.mywebcommunity.org/96978351492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387819/normal_602176a48fb94.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/79e5cb94-9672-4246-9e6b-97c728d4f90f/magoosh_gre_prep_review_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae84c441-8f8f-40b7-85b2-f104d9327d13/casio_g-shock_protrek_pathfinder_solar_watch-waterproof.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/minna_no_nihongo_1_audio_download.pdfIn PDF document text
    • http://lorovaxejavagu.rf.gd/sodeserisoxude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cb96c42-5e04-4c74-a2e8-745a35b56156/93412914756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ad8f9bd-6b7a-41ed-acbd-48bdf7ab1502/the_norton_anthology_of_american_literature_1865_to_present_9th_edition.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AE 5164 bytes
SHA-256: c748943648bb83abc984656d5f878e0d5cc7cc3d2e54961472166ce1fe3660ae
font_01_sfnt_off0000fb57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB57 12744 bytes
SHA-256: 6439e7bbf2db22bbbe4bffd64456cb461ec55332be633755ad35c1df467b50cf

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