Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ed4e53306a24f4…

MALICIOUS

PDF

71.1 KB Created: 2021-02-28 05:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7c8b88a2416fb01796784260a5192859 SHA-1: 5f5974e4a37151d42d2562d790683445dbdf604a SHA-256: 72ed4e53306a24f46ffa2cc883b06359a8787a59974bc0c0b007b2491968fa06
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=hubba+bubba+squeeze+pop+ebay PDF link annotation
    • https://fozabezadako.weebly.com/uploads/1/3/4/6/134639332/mikatebubuvoza.pdfIn PDF document text
    • https://sazuwigigaxav.weebly.com/uploads/1/3/1/4/131407293/vinipojovidatisov.pdfIn PDF document text
    • http://xekedibu.iblogger.org/37630178017.pdfIn PDF document text
    • http://pimazisiperej.iblogger.org/appvalley_spotify_premium_apk.pdfIn PDF document text
    • https://kowadesilokawu.weebly.com/uploads/1/3/4/2/134265693/bafilodil_sufugi.pdfIn PDF document text
    • http://arbitestpark.xyz/trk_dili_ve_kompozisyon_bilgileri_parvxq.pdfIn PDF document text
    • http://it50life.pro/23554160144erugy.pdfIn PDF document text
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/5310801.pdfIn PDF document text
    • http://lifegirls.site/2012_vw_jetta_tdi_transmission_fluid_changey98bl.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/bibejovixapis/pte_academic_vocabulary_list.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/latex_report_class_bibliography.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/do_dogs_have_allergies_to_peanuts.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/8338191915.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/accrued_expenses_on_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/radazutimawiwiviluvib.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/credit_impot_formation_chef_d_entreprise_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/sezamutineb.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/39329830800.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_off0000d8fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FD 5064 bytes
SHA-256: 12e85d4ca50a188aa0453571fd90876bfcc89e8c3ec5b34187c6837eeddfb52b
font_01_sfnt_off0000ea5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5B 10996 bytes
SHA-256: 77878af53adb64df15f87790b32bd7a9b2de0c34c0fa8ecffc5197a62ae9482b

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