Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba4daabde5c2ebb9…

MALICIOUS

PDF

75.4 KB Created: 2021-02-24 04:55:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: eee9e7cd544f24eab160f6f919164446 SHA-1: a2ff519340b36c63489fb8fd564ff56bb794fdcb SHA-256: ba4daabde5c2ebb9a9e4a420902158d8ed7f955b173dde44b3882f1659ee9964
196 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=will+there+be+a+warrior+cat+movie PDF link annotation
    • https://cdn.sqhk.co/kamozipu/ieSWgce/meet_video_conferencing_video_meetings.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/4hgieIT/15883627025.pdfIn PDF document text
    • https://rajepejejema.weebly.com/uploads/1/3/4/8/134860913/dibupinazaxaj_gixozir_gepugikofurowo_nituz.pdfIn PDF document text
    • https://cdn.sqhk.co/ketifoseja/hahfjeT/sea_battle_classic_android.pdfIn PDF document text
    • https://cdn.sqhk.co/wifepodilojo/kIh7gjP/zawumuto.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/qghsBOr/8071183380.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/lidpibu/43842676684.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/GFjfjhG/radio_online_89_rock_br.pdfIn PDF document text
    • https://cdn.sqhk.co/dosapupa/7YhimJs/easy_launcher_battlefield_3.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/7jcUjeK/fasajad.pdfIn PDF document text
    • https://wowobomufib.weebly.com/uploads/1/3/0/8/130874304/midotarijepafokizepe.pdfIn PDF document text
    • https://boxakowomer.weebly.com/uploads/1/3/0/8/130874011/2212911.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/fizaxo/panemiwesalevokutok.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/sort_excel_spreadsheet_column_by_date.pdfIn PDF document text
    • http://webidiwotew.epizy.com/amma_songs_tamil_free.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_off0000e8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B2 5164 bytes
SHA-256: d46ce3da8ce6829e1a933b361605489d47ce39e65cb3ced0563ed50bad32fa50
font_01_sfnt_off0000fa33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA33 11452 bytes
SHA-256: bd04a42a217b4c59d8f9f3ae29b86b4ed9fa42c150c0b570ec2d01af1be70ad4