Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7514dd57961c5d…

MALICIOUS

PDF

74.0 KB Created: 2021-02-05 06:13:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a7ef54b75504cb7eca35356ea7e3d386 SHA-1: 026e395061294f815814433457146620ebd21a07 SHA-256: 9f7514dd57961c5d09f6e9e26066af2e736d75a61d582401e267fd9ebe5e24fe
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=candy+crush+soda+mod+apk+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4476564/normal_600fc849f3c45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417813/normal_5ffa5806ce34c.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/BmhjIic/tuning_fork_sound_in_ear.pdfIn PDF document text
    • https://cdn.sqhk.co/lopovekis/zVM8Vjc/my_best_friend_likes_and_dislikes.pdfIn PDF document text
    • https://cdn.sqhk.co/volixusej/jdOwQha/baby_panda_s_summer_cafe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383804/normal_600922c985c0d.pdfIn PDF document text
    • http://triple-doska4.club/wurobufubejesejidoxaaukmo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389586/normal_5fdbb4999b291.pdfIn PDF document text
    • http://dobewobezusisof.iblogger.org/fupatewetumababodegepiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tidovikuvam.epizy.com/85205298773.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/gisedipewadid.pdfIn PDF document text
    • http://lelekon.epizy.com/mafatusimageta.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/section_8_recertification_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/tigosexipiwarora.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/gowdas_mongra_cg_song_video_mp4.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_off0000e587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE587 5352 bytes
SHA-256: d724a0ce09b917c2a9ef5b7a9580ae28ffe393970fd63ff8fe102b3c2e3af0d7
font_01_sfnt_off0000f795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF795 10404 bytes
SHA-256: a88cebe6c68ca2b74a2bf7a759af5a6af25d720c69d6a14e654b92f49897b5fd