Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b730686e2da5c0…

MALICIOUS

PDF

67.7 KB Created: 2021-02-16 21:58:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0d690e870b5c576389a588cf87bdb532 SHA-1: 06a3b0b127fc7d5ea9043bad856657aa144869f1 SHA-256: a9b730686e2da5c00e19453c37f562d17282277db2077f5abbb727ab1a2d4e5c
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://druttle.ru/wix?keyword=download+apk+ilauncher+pro PDF link annotation
    • https://cdn.sqhk.co/purizepore/Kjdgejd/totakafokofodateserada.pdfIn PDF document text
    • https://cdn.sqhk.co/zapiseniw/Giofghs/occupational_health_nurse_salary.pdfIn PDF document text
    • https://cdn.sqhk.co/bogonelemid/Kdiiifg/dragon_village_m_card_codes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485440/normal_601a7dbde6c14.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/eYjijbi/gobilizizanu.pdfIn PDF document text
    • https://cdn.sqhk.co/fipufose/dkggjbw/68361570595.pdfIn PDF document text
    • https://cdn.sqhk.co/farosexuto/ijhghhd/gmail_sign_in_gmail_sign_up.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425929/normal_5fe864af07cf7.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/NiaFjhc/movuravatizufesoti.pdfIn PDF document text
    • https://cdn.sqhk.co/dudumadopole/hjgK7kL/plant_and_animal_cell_organelles_venn_diagram.pdfIn PDF document text
    • http://maska-respirator.shop/how_to_write_conclusion_in_internship_report42mug.pdfIn PDF document text
    • http://shopbest.online/jozuwuvgqqx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474977/normal_5ff8c33ca2235.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/ehghdif/exploding_kittens_third_expansion_cards.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://risepaxazitomep.rf.gd/journal_ennahar_d_hier.pdfIn PDF document text
    • http://ridejisedogik.rf.gd/modomafopevaf.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_off0000ce36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE36 5136 bytes
SHA-256: f26e1b9d5219d954458434db63b4474ea6051907c14558a519ae4711be14b73d
font_01_sfnt_off0000dfc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC4 10096 bytes
SHA-256: 4c36722ad95a249ac4269f37f60b4ea50decf49bf8c8ef6102382b68e339b5e1