Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a087045a337c804…

MALICIOUS

PDF

69.1 KB Created: 2021-01-30 09:54:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3a44399842a956ccf43a57ed43cdfd7d SHA-1: d6948e4a1eefd0e570dd12f0d533d92c81711cde SHA-256: 9a087045a337c804395fd8d99f0968acba03cac830a61e060ec5d7d6beabc1e9
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://trafffe.ru/wb?keyword=amc%20cookware%20price%20in%20chennai PDF link annotation
    • http://obschee.xyz/mafoxuvewajodewubaxewawafzn6w4.pdfIn PDF document text
    • https://watowerapomos.weebly.com/uploads/1/3/0/7/130775357/7121131.pdfIn PDF document text
    • https://sizokagijabid.weebly.com/uploads/1/3/4/6/134652394/2351651.pdfIn PDF document text
    • http://logmeinnow.xyz/fundamentos_sociales_del_comportamiento_humano7b4ff.pdfIn PDF document text
    • http://idealicaitalia.website/the_gangster_we_are_all_looking_foroz55r.pdfIn PDF document text
    • http://vinorama.fun/big_bang_theory_cast_penny_last_namekfdkp.pdfIn PDF document text
    • http://dkblogin-de.best/space_wallpaper_4k_windows_10fz5fy.pdfIn PDF document text
    • https://xiwulugizasu.weebly.com/uploads/1/3/2/7/132741433/muvuvu.pdfIn PDF document text
    • https://zovejesuvenej.weebly.com/uploads/1/3/1/4/131438366/tufagoxamal-fotoderomiwon-newutonogido.pdfIn PDF document text
    • https://werobipopopavuv.weebly.com/uploads/1/3/1/1/131163729/muworeg-wovunerefinafi.pdfIn PDF document text
    • https://losiweso.weebly.com/uploads/1/3/1/3/131380476/kamugosoromega_lusupox_nutopimajovo.pdfIn PDF document text
    • https://vusozegaxu.weebly.com/uploads/1/3/0/8/130874635/rupinul_gikevisuw_wegigidapusu.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/tasufagijaremo/attendance_register_format_with_in_out_time.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/nc_vehicle_bill_of_sale_form_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/30729763086.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/utorrent_free_latest_version_2019.pdfIn PDF document text
    • http://bibesatu.epizy.com/free_editable_weekly_lesson_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/tanabofezovavu.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_off0000d105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD105 5108 bytes
SHA-256: 042c39ff0bccd2da7549d7e57177b5bda4cb8037e19c7991f000e915596fbedb
font_01_sfnt_off0000e24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24F 10904 bytes
SHA-256: 2ade15863d4af026ed03204590a1e9ab927fb0940a315353c3656113a7858c8f