Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6b52844a019b5a…

MALICIOUS

PDF

71.0 KB Created: 2021-02-22 04:23:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ee9461005e7ba6812f541452eaf74a8e SHA-1: 84001d9edfb76f32b73a06a9df16af4bdb4c36ca SHA-256: ca6b52844a019b5a968ee6f8cded90c22cd56056f2a257ba3911ff7e9717dc87
136 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
  • 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://jottigo.ru/wix?keyword=call+of+cthulhu+7th+edition+investigator%2527s+handbook+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454045/normal_5fd2f904b1de4.pdfIn PDF document text
    • http://static-get.top/how_to_set_up_bushnell_golf_watchaq1pz.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/jfXKihb/homemade_strawberry_ice_cream_recipe_no_eggs.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/jdibgdO/off_road_travel_4x4_hill_climb_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/demanajinu/hbigGvu/knife_sharpener_electric_reviews.pdfIn PDF document text
    • http://raifaisentgo.online/kaskade_tear_down_these_walls_lyrics1f03y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367923/normal_60028a1a0e9d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446395/normal_5fe1b5c7d1306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474192/normal_601c748d99196.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447662/normal_5fee0b9be088b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486037/normal_60025576b53c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_6026ac9f5de02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kutezowifemiwe.epizy.com/walolidopolamefaz.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/acreditar_de_novo_1kilo.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/rikesoniwodoneravutaxore.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/ravop.pdfIn PDF document text
    • http://resutujimi.epizy.com/jufasivexegosivukipuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/al_state_tax_form_a-_4.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_off0000d74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74B 5792 bytes
SHA-256: be1b6d134b2c5c71f4433c3e1812bbba5218e6f0095909c60cd2076f262f26c6
font_01_sfnt_off0000eb16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB16 10184 bytes
SHA-256: 152c3f941cb465693c1dc9c92170bc75e10c11ecb56d264c4d5ce43b59c9c02e