Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af9fc53fa7525e3…

MALICIOUS

PDF

68.7 KB Created: 2021-02-26 12:31:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2f523842cb481e23014a3f41f3e4f4e0 SHA-1: ec4cde81c41504db0094302fdedbf3ceee90f2c2 SHA-256: 8af9fc53fa7525e39d4c8b727f98e0edb38629944f1086e8b06d66e3c53c570b
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://lozipotod.ru/award?keyword=eureka+lightspeed+vacuum+4700+parts PDF link annotation
    • https://cdn.sqhk.co/xotosobupis/WieMgul/56856950181.pdfIn PDF document text
    • http://fejukoturig.medianewsonline.com/selalunevazavetapijar.pdfIn PDF document text
    • http://pixxel.life/jivaxagip2mbsp.pdfIn PDF document text
    • http://scandisvet.ru/44987664015qtwq.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/dhaidjj/37748219971.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491398/normal_5fe52a1b46e14.pdfIn PDF document text
    • http://asta-stroy.ru/c_boost_urlkg5e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494429/normal_6017b8827fae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371509/normal_6021bd7daebfc.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/vibasujefir/vefetawajixapodomokel.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/tapegijusumob.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/vertex42_calendar_template_for_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/wapunov.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/19024032880.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/crime_prevention_through_environmental_design_nsw.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/project_timeline_planning_template_for_microsoft_excel.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/molalidad_disolucion_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/rugasujogogawimotalilokir.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/51236763475.pdfIn PDF document text
    • http://valupakukav.myartsonline.com/how_to_connect_garmin_forerunner_620_to_wifi.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_off0000cc38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC38 5876 bytes
SHA-256: bd5b5ce3e3b222fe22b777af9e9e8d70722f0c51778c9b4e455acc6755f2156c
font_01_sfnt_off0000e028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE028 10436 bytes
SHA-256: 02c80f982d1e4bdc542c7338cae3e3ceb007e032ba774ec26786e4e0694ff13b