Malicious PDF — malware analysis report

Static analysis result for SHA-256 45fe6fe379c1123a…

MALICIOUS

PDF

72.7 KB Created: 2021-02-27 06:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 05413799e7561f5801d504d49706bf73 SHA-1: 41109aeb99965fbd8735647c9fa5d3feea92ecd5 SHA-256: 45fe6fe379c1123a8f426858b3b4aab689ef3f7d7b9a7c7445ff577d257b9e0c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://vilenefex.ru/award?keyword=jane+jacobs+robert+moses PDF link annotation
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/xirizegomo.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/what_lights_should_be_on_my_router.pdfIn PDF document text
    • https://cdn.sqhk.co/mowamukar/9ggigge/5353585413.pdfIn PDF document text
    • http://gudelew.mywebcommunity.org/35460470305.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/bKgjhjf/87678752250.pdfIn PDF document text
    • https://cdn.sqhk.co/mumaxeje/69Fmwjb/texas_a_m_corpus_christi_softball_camp.pdfIn PDF document text
    • https://cdn.sqhk.co/nikofejujel/hhhDhhV/wefalurutanekezaxu.pdfIn PDF document text
    • http://jupomolitage.22web.org/internet_manager_chrome_mac.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/wotodedaruzuk/navuboritododotevimavepu.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/kearney_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/windows_10_game_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/nufegiwi.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/kowitomizorufojotuv.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/practice_worksheet_expanding_and_condensing_logs_answers.pdfIn PDF document text
    • http://zivositad.rf.gd/admission_form_allama_iqbal_open_university_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/86208829770.pdfIn PDF document text
    • http://ropawoma.rf.gd/blue_book_of_grammar_and_punctuation.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_off0000e0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E4 5116 bytes
SHA-256: 0d6b6d23548bc8c05c494663a82f6703b8f9c6d651fe28a4ae168d4a6782398a
font_01_sfnt_off0000f23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23B 10520 bytes
SHA-256: 274a159fc0c9c62c584a65db16fc61fec71f15311246fd7bd45477eaa6ea06aa

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