Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b744953fc2199a0…

MALICIOUS

PDF

71.4 KB Created: 2021-03-02 19:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1639320ea1b354f3e5d896e458a58aa8 SHA-1: 78d1565be04354b007cbcaebc4c9cdb6beaa9c88 SHA-256: 3b744953fc2199a0c7ee2234d8a23e047b19ab6036facf76111122cdd2fe1448
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=grades+garden+apex PDF link annotation
    • http://bagerisevi.scienceontheweb.net/why_did_graystripe_leave_thunderclan.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/55727874147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448539/normal_603e3c7951d25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5fcae87330dee.pdfIn PDF document text
    • http://dupamineni.medianewsonline.com/is_iatf_id_still_valid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470833/normal_6038c677ec253.pdfIn PDF document text
    • http://reduslimitalia-official.site/4329275689v4hvl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373987/normal_5fd1f40c16e50.pdfIn PDF document text
    • http://shoes-storie.club/ross_stores_stock_after_hoursbukst.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rogofideb.onlinewebshop.net/dsl-2750b_firmware_download_eu.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/national_lampoon_s_christmas_vacation_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/23965713536.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/gujegugamafojuxusanuzi.pdfIn PDF document text
    • http://zawagebojirowe.rf.gd/invoice_template_word_2007_free.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/learning_radiology_recognizing_the_basics.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/whatsapp_app_jio_phone_support.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/12101513111.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_off0000dbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE2 5192 bytes
SHA-256: bdd3c03ac3d0fe714d0d9dfc8ddd401bc8b8cbdbcfa2ea0cb58b65ebd03f1fe1
font_01_sfnt_off0000eda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA4 10504 bytes
SHA-256: 3717718399b3e9f51f2407864e2e45533759d27a7eedf6e1138d2031c4ae95ad