Malicious PDF — malware analysis report

Static analysis result for SHA-256 8463af89cab292f0…

MALICIOUS

PDF

76.2 KB Created: 2021-02-16 23:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e7b5bbd48c8e42cca8ab899fb5018736 SHA-1: 8a21c068704e3002c0245b661569c1de6c525642 SHA-256: 8463af89cab292f03dbe2058a289cc64e6ceff0eee2b3a61906283ce35b3d541
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://bologen.ru/wix?keyword=blank+map+of+eastern+hemisphere+with+countries PDF link annotation
    • http://topsale.pro/lease_agreement_form_free6o59p.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/bVhf6ia/rejefutuxexegurorur.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/Ddaighf/captions_for_instagram_pictures_in_spanish.pdfIn PDF document text
    • http://esportzmlevent.com/mezijijewite0kwq.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/f0GghyL/78559494286.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/wozobisigegebakerotalak7s1kl.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/litunux/battle_dogs_mod_apk_rexdl.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/home_depot_sheetrock_patch.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/agent_vinod_movie_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/15720484927.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/arrive_reporting_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/puxajerimetudixuge.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/mcdonalds_breakfast_wrap_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/budd_chiari_syndrome_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/lodotobonoburiwewut.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_off0000e67f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67F 5460 bytes
SHA-256: fcb223608bada9aef870239454e23dc145773b85172aa5b37631548096f75604
font_01_sfnt_off0000f8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FF 13612 bytes
SHA-256: 66bb551621bd1d9897b092625a1b53875666fe70d2e69f66f10f119d646bad5d