Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b24222763a3893f…

MALICIOUS

PDF

69.4 KB Created: 2021-03-01 23:11:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ca1f8c802c546c21e1de4fbcf856ed0d SHA-1: b822a84c05c8f75f50753e99b751a5ccd29758eb SHA-256: 7b24222763a3893f59c5927384d7aab13ec675ad22370faef514f8f5395181e0
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://xezojetit.ru/award?keyword=asus+m5a97+le+r2.0+motherboard+manual PDF link annotation
    • https://tusujowifavenag.weebly.com/uploads/1/3/1/4/131453847/9901370.pdfIn PDF document text
    • https://gunajogozezulom.weebly.com/uploads/1/3/5/3/135385825/1748309.pdfIn PDF document text
    • https://vigegenatiborig.weebly.com/uploads/1/3/0/7/130740049/miribuzozawilik-levidedefijager.pdfIn PDF document text
    • https://cdn.sqhk.co/nibubovixif/B4eLicB/pet_clinic_lincoln_ne.pdfIn PDF document text
    • http://dumubemajizukov.medianewsonline.com/xowonozokivenetedutajir.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/ihejch4/podilajofow.pdfIn PDF document text
    • https://kukonite.weebly.com/uploads/1/3/4/6/134611202/cb82672d.pdfIn PDF document text
    • http://tubujagowip.iblogger.org/fusurugujijategesod.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/NLPghih/national_and_american_league_football_teams.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/tufitijinexu/85737598080.pdfIn PDF document text
    • http://zazupixuwup.rf.gd/kesalixuzalonaf.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/jigakepijixulex.pdfIn PDF document text
    • http://zotubune.myartsonline.com/21730658739.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/dabidi.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/coway_ap-1512hh_filter_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/money_pink_floyd_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/bedingte_formatierung_bertragen_excel_2016.pdfIn PDF document text
    • http://sasavinoseg.epizy.com/guided_meditation_relaxation_5_minutes.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/80287527515.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC542 3444 bytes
SHA-256: 08ec35095cc8bf9365d19c98fc4f680a06ce2f1fc0399dc2d9420a97c04bca1e
font_01_sfnt_off0000d1a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A8 5860 bytes
SHA-256: ae6f337aaf5e3960f8db56a1abb327471ad8dda3ac4f4e65231fd19380e9e21e
font_02_sfnt_off0000e56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56D 9560 bytes
SHA-256: de4772fdd9679cafed97a5dfd038b926900b4c7b1b5f95ed0ad3745797f339d2

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