Malicious PDF — malware analysis report

Static analysis result for SHA-256 14460a9e4305068e…

MALICIOUS

PDF

75.3 KB Created: 2021-04-07 02:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bf2e840723f7172e7227e73dba63a64e SHA-1: c858accdee9dc74f1c82fe88ca920e4400d2234b SHA-256: 14460a9e4305068e9be828fa0aeed37d1768d783faea5fa7f7bd5ab3eed6cba3
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 0.9993

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://jumiwimov.ru/award?keyword=cancer+stages+1+4+pdf PDF link annotation
    • http://lulizukudomiz.scienceontheweb.net/zofiwil.pdfIn PDF document text
    • http://niwizonoleror.mywebcommunity.org/52284604693.pdfIn PDF document text
    • http://xofofumireke.mypressonline.com/80270371059.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/gigojufim.pdfIn PDF document text
    • http://gosepakaf.getenjoyment.net/prohibido_enamorarse_de_adam_walker_3.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/blest_be_the_lord_satb.pdfIn PDF document text
    • http://lupazul.mywebcommunity.org/42832268545.pdfIn PDF document text
    • http://risimog.mywebcommunity.org/bitsat_sample_question_paper.pdfIn PDF document text
    • http://fafabil.getenjoyment.net/rufuzekupanesodefufa.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/60584988965.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_c7f4ed226a404f94b8caf5b5b21a63ec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/boss_ls_2_line_selector_loop.pdfIn PDF document text
    • http://zisukuvi.atwebpages.com/chemistry_a_level_revision_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/184a6ee7-b1f8-4690-9176-003590982b00/how_do_you_measure_a_huffy_bike_brakes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/981a0923-825e-431e-a05e-1061feeff624/sohcahtoa_word_problems_worksheet_with_answers.pdfIn PDF document text
    • https://f459ab6e-ac57-43ce-b83a-1524846427e4.filesusr.com/ugd/938c70_e30a146b8bf94be3977805ee8f69b8fa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/73754636650.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/canon_mp25dv_paper_feed.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/what_companies_practice_conscious_capitalism.pdfIn PDF document text
    • http://bixozebaxikapos.atwebpages.com/lamavufiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f53b6d12-e397-4429-9cd4-709dc2ff748e/watch_cat_in_the_hat_full_movie_on_youtube.pdfIn PDF document text
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_3ae0778f0ba1490cb445a3b4e3fae98c.pdf?index=trueIn PDF document text
    • http://sidepojedava.myartsonline.com/bhagwat_gita_in_hindi_book_download.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_off0000e95d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95D 5336 bytes
SHA-256: 0ad030690a1752c4f20a023b5089f9f857c5300aaf83a5532e0b317c64af5bed
font_01_sfnt_off0000fb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9A 10812 bytes
SHA-256: c68e00ba4e275f079c2af6bee205b8ef95267cdc202b33d92f7e416d03fb6f62

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