Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf1998a44124470…

MALICIOUS

PDF

78.0 KB Created: 2021-04-05 12:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5cb459d1bf8483067d44b7ba53a33416 SHA-1: 1e799bd508578df9daa24ebbb1728ce4f2b82110 SHA-256: faf1998a441244701832fb396360ce3139e16a951eaaaeecfd7c2b2b1299577b
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 0.9991

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://dugedepap.ru/wix?keyword=telecharger+la+poule+noire+pdf PDF link annotation
    • https://vuginavoji.weebly.com/uploads/1/3/0/7/130775358/959945.pdfIn PDF document text
    • https://xiduxerajul.weebly.com/uploads/1/3/4/6/134696605/tulunizumi.pdfIn PDF document text
    • https://cdn.sqhk.co/pulafefer/ZJohbig/dorexudiriterusiralo.pdfIn PDF document text
    • http://cardio-active.site/tableau_desktop_download_free_full_versiontc5py.pdfIn PDF document text
    • https://tagorawijetix.weebly.com/uploads/1/3/5/3/135392874/luzupadamedavelubo.pdfIn PDF document text
    • http://omshop.space/8670533312n676o.pdfIn PDF document text
    • http://mastericy-chistoty.ru/21844029564mlkfm.pdfIn PDF document text
    • https://jatevabuxises.weebly.com/uploads/1/3/5/3/135382810/datubowo.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/8136883741.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/3xnVuhf/buffer_company_wikipedia.pdfIn PDF document text
    • http://kyukty68.xyz/holds_the_city_overhaul_compatibility7xxpb.pdfIn PDF document text
    • http://ig-support-service.com/ball_lightning_cixin_liuv6kp8.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/jhi1jhp/97163125362.pdfIn PDF document text
    • http://zotegomowivin.22web.org/buddypress_documentation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/luborinizu/spelling_words_for_grade_5_worksheets.pdfIn PDF document text
    • http://fopuzotetowux.rf.gd/duvogufa.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/is_the_movie_hidden_figures_on_netflix_yet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad735983-a0b8-49e5-921d-bcff16405a3e/ver_pelcula_luces_de_bohemia.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/hearthstone_arena_guide_boomsday.pdfIn PDF document text
    • http://wedalavunobuwe.rf.gd/how_to_get_baby_groot_in_fortnite.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/the_redemption_manual_5.0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bada76e-78ec-442e-8531-88f3cc3e6290/dr_jekyll_and_mr_hyde_1931_film_review.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/abba_happy_new_year_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc82b9f1-93b7-4347-846f-c902c38afcf5/98867496684.pdfIn PDF document text
    • http://pafomotaxo.epizy.com/calendar_by_month.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_off0000f0d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D9 5188 bytes
SHA-256: 1e390c84160c493a137cc140a57fd91aecd4497b9e86c4c53101a915a3350dd5
font_01_sfnt_off00010277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10277 12620 bytes
SHA-256: 14558c9208362bdda8af590199d119dbf0691347c8fd5646b249a1e3edda89ca

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