Malicious PDF — malware analysis report

Static analysis result for SHA-256 7671aefde49ef1bb…

MALICIOUS

PDF

70.5 KB Created: 2021-02-23 12:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0d7d5159884102a8774af0f245f6b393 SHA-1: 0452526846e028248238473ced7f767cf18b6b46 SHA-256: 7671aefde49ef1bbf1cf60e2f339033a4ccbb72fe2aac5a4ea150ce039e281c9
194 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://crophysi.ru/wix?keyword=through+the+glass+doggie+door In PDF document text
    • https://cdn.sqhk.co/bajafigotuvi/pXqjg2w/sawiwozabusawaluma.pdfIn PDF document text
    • https://dozunetad.weebly.com/uploads/1/3/4/4/134472758/xujaxo.pdfIn PDF document text
    • https://lenexemumuvag.weebly.com/uploads/1/3/1/4/131438583/lebovurodo-sijolare-labivufugekedog-pipufumel.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/rjjSSw1/81258419862.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/S1JDkH7/9312902716.pdfIn PDF document text
    • http://pajiweputuniwas.iblogger.org/performance_reviews_for_managers_templates.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/tarajix/16575310195.pdfIn PDF document text
    • http://voxotili.epizy.com/54625169435.pdfIn PDF document text
    • http://fikumowo.rf.gd/big_little_lies_season_3_episode_7_recap.pdfIn PDF document text
    • http://ruzizasasasami.rf.gd/la_afareye_fi_song_mp4.pdfIn PDF document text
    • http://zaxutakizet.epizy.com/zitigezakovepud.pdfIn PDF document text
    • http://lidewez.epizy.com/electrical_engineering_degree_online_california.pdfIn PDF document text
    • http://felixoxajaxev.epizy.com/lagu_ariel_noah_moshimo_mata_itsuka.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/anime_glare_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/export_manager_job_description_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/79756476066.pdfIn PDF document text
    • http://nolerepegumadoz.epizy.com/android_studio_project_structure.pdfIn PDF document text
    • http://lezebotetojezaz.epizy.com/revit_duplicate_sheet_with_detailing.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_off0000d8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8EE 5036 bytes
SHA-256: 2ea9818b6e25ea4ce59f0e1f09f87e6f4eab8e8859e52c0ee8737b433e4eb4c8
font_01_sfnt_off0000ea03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA03 10328 bytes
SHA-256: 113e90000e68cea79fe5d98105d5637e0c6d2c133992b802ef3693b97a42f570