Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ad7399b90e692c…

MALICIOUS

PDF

71.3 KB Created: 2021-03-18 18:28:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f39ea3bc80bbe8a1afcc61be82a690bd SHA-1: 96bb789607328ebb60e73a0ebd20191d483ecad5 SHA-256: 17ad7399b90e692cfecd35de19ead251e7c1b8eb2750142dee3321eed0145368
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, one of which, 'https://pelibifir.ru/123?utm_term=superannuation+guarantee+form', is identified as a potential lure. The PDF structure and embedded links suggest a phishing or malware distribution attempt, likely using social engineering to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/123?utm_term=superannuation+guarantee+form PDF link annotation
    • http://detonic-hypertonie.website/webadirezawetikodagon6d3p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426072/normal_601aa12f73410.pdfIn PDF document text
    • https://cdn.sqhk.co/vexavudakepa/FL3gcic/ladies_voodoo_magic_costume.pdfIn PDF document text
    • http://ferategaj.scienceontheweb.net/pdf_splitter_and_merger_free_download_for_windows_8.pdfIn PDF document text
    • https://zoxalutaj.weebly.com/uploads/1/3/1/4/131407742/d23df7f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403672/normal_600751fbd4aa6.pdfIn PDF document text
    • http://fb-copyright-help-from.com/21597601917qwion.pdfIn PDF document text
    • https://zokofefedepop.weebly.com/uploads/1/3/1/4/131437243/nupajamep.pdfIn PDF document text
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/wenemor.pdfIn PDF document text
    • http://tk-pobeda.site/what_is_the_primary_focus_of_managerial_accountingfqkpz.pdfIn PDF document text
    • http://soul-felt.com/how_to_check_covid_19_result_in_saudi_arabiaggbjl.pdfIn PDF document text
    • http://rojibitakuvekuw.scienceontheweb.net/how_to_use_chefs_choice_knife_sharpener_4643.pdfIn PDF document text
    • https://cdn.sqhk.co/ninilevikod/UgfrMY3/pixobeperegamejuvof.pdfIn PDF document text
    • http://energytik.net/senevoxajeginedofexifasegedrjy.pdfIn PDF document text
    • https://cdn.sqhk.co/wefekoferu/JspiiYE/toziwasabi.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/6df837cf-0d16-4495-b1be-ad058791d095/an_american_experience_poisoners_handbook_video_questions_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e44ec06-e2dc-41a0-a3e2-2cdbd657190d/wosapubudose.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/85633648120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cd6b638-6e2b-4c12-a952-e1993734ab49/the_hobbit_unexpected_journey_full_movie_free_download.pdfIn PDF document text
    • http://wadoromutisagar.myartsonline.com/sevozusudafut.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5B 5116 bytes
SHA-256: b4f5cd23553446ff578b6f53b28fc9fed238531902af465d3010e18a152a399d
font_01_sfnt_off0000ebb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB2 10612 bytes
SHA-256: 07cfb284bcf667a2a37904c2426370d19f135d66d550523235850a5983f4a6b4

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