Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c9d66eeb38762d…

MALICIOUS

PDF

85.5 KB Created: 2021-01-24 18:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eabe2b055d41978da54698ce1cade377 SHA-1: 42ff92937a76731079e006364d426718afdbe8e5 SHA-256: 49c9d66eeb38762d87a97cfb0467b10b53deee31f088973488f19e922e694f73
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/aws?utm_term=pelvic+inflammatory+disease+guidelines PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kavalukato/wallpaper_love_status.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/arizona_civics_test_study_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/capitaux_permanents_formule.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/grading_rubric_for_short_answer_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/vejorafivamiwunuta.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/bn__h_ni_mi_nht.pdfIn PDF document text
    • http://wedizakur.epizy.com/zaralafimalotamav.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/jowoli.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/20709618333.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/xamavijejufulunofi.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/fadexijemev.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/gloomhaven_tinkerer_guide_imgur.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/my_talking_angela_games_for_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/zezejizopevorogop.pdfIn PDF document text
    • http://xupanapil.epizy.com/kitupebe.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_off00010ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF3 5504 bytes
SHA-256: ac4eb97a50d7eb3ec2eb5fe0cb47635b4d3b06dfebf9f7cfa055894ac2a5dcbd
font_01_sfnt_off000121ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121AC 12548 bytes
SHA-256: ffaba1df69ee2bc8483c78b9465f9807b9e2972fe50d4bbdcde442e82d0fda2e