Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1fd30230d43f5c8…

MALICIOUS

PDF

64.2 KB Created: 2021-02-14 19:10:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aea91468faf20bf7cab8e280e9b9656d SHA-1: 23fd7515a33f6e623624109818cc44347c11e629 SHA-256: f1fd30230d43f5c80ce5061f372c705405ea98d2dc9c33721746e53903952447
156 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/wb?keyword=nat%209599%20superannuation%20guarantee%20form PDF link annotation
    • http://lnstagramverifiedsbadgeforms.com/259649545375yh2h.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/gCr2Igi/tasedulosefi.pdfIn PDF document text
    • https://cdn.sqhk.co/lokovipazal/jdjfPhf/disejinizelusig.pdfIn PDF document text
    • https://cdn.sqhk.co/pegebatanuz/gigcDJk/tiptop_esl_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/0ggjBYz/xagapuxoluwowufi.pdfIn PDF document text
    • http://wopedejani.iblogger.org/telugu_hd_movies_sites_list.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/dumupa/34941268138.pdfIn PDF document text
    • http://rorewoj.rf.gd/77682229215.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/weather_report_for_galena_illinois.pdfIn PDF document text
    • http://nesuzilusuk.epizy.com/30586232553.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/censored_beep_sound_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/donny_and_marie_talk_show_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/14784494193.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/govitomebu.pdfIn PDF document text
    • http://lewefip.rf.gd/revenue_model_of_e-_commerce.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_off0000bf28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF28 5436 bytes
SHA-256: 5025026d72047f81a15b9c8d19e284a249342e15cee30bb9e95231104e843d80
font_01_sfnt_off0000d19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19F 10132 bytes
SHA-256: a4963a16592d9e47d3c7219762ef9bed56274a326acb7e989207987497233e62