Malicious PDF — malware analysis report

Static analysis result for SHA-256 508c701b6c92f15c…

MALICIOUS

PDF

71.2 KB Created: 2021-02-14 18:37:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 18548c4a06f646d13d133e9a3e6a169b SHA-1: 1e9eb0ab8062b2741bda34806ba31470a0fc47db SHA-256: 508c701b6c92f15c36d13cd4070b654adec7f882fdfa8cde2c1589dce104509f
144 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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=virtis+wizard+2.0+freeze+dryer+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463552/normal_5ff669380d9c1.pdfIn PDF document text
    • http://help-bluebadgecenter.com/let_there_be_peace_on_earth_sheet_musicgr5kr.pdfIn PDF document text
    • http://tehnikator.ru/gijuzokotokooh0e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417980/normal_6013deec30ed3.pdfIn PDF document text
    • http://ezfix.asia/ms_access_database_worksheets_for_studentsscqf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472501/normal_601cf459dd048.pdfIn PDF document text
    • http://stassikorskyi.com/jenodajifujabaduvajazelabgytk.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/bezutu/17222912594.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/naqaab_bengali_movie_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/ieee_formatting_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/redidironomebote.pdfIn PDF document text
    • http://vugikalijuboxo.epizy.com/goradiwujubuvilagekikate.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/android_ndk_cmake_static_library.pdfIn PDF document text
    • http://mefomoximene.rf.gd/bialetti_electric_espresso_maker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/ayo_ft_teo_rolex_music_video.pdfIn PDF document text
    • http://tuvilijemuze.epizy.com/95739158674.pdfIn PDF document text
    • http://wepaxilex.epizy.com/rubaporezazemovif.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/weekly_mathematician_crossword_answers.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_off0000d77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77A 5568 bytes
SHA-256: 9cab5f1a80f2ecb961203ffbb95f35ddc189c03b5d13c90b935b32c48825f69f
font_01_sfnt_off0000ea7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7C 10992 bytes
SHA-256: 58e6f90e3ce15922559c8b61fad6e03d4c0a856d435fa6bb169472d726f94347

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