Malicious PDF — malware analysis report

Static analysis result for SHA-256 baaf307e237d1eb5…

MALICIOUS

PDF

78.2 KB Created: 2021-02-12 07:39:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 60e5d3b72ec3062ca7639a43d39eefd9 SHA-1: b4c50366b831839658fe623cf96097b500e98a17 SHA-256: baaf307e237d1eb5148ca94eb324e48de45e783ca4ed39303511ebc88e230afe
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://seumenha.ru/wix?keyword=download+clash+of+clans+hack+apk+unlimited+gems PDF link annotation
    • https://cdn.sqhk.co/detazido/Djeha0D/5406979526.pdfIn PDF document text
    • https://cdn.sqhk.co/lilokimoz/fjbhepQ/faxozumix.pdfIn PDF document text
    • https://cdn.sqhk.co/zomulusiku/gjdhase/highway_rider_bike_racing_crazy_bike_traffic_racer.pdfIn PDF document text
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/jaxusujadibimujala.pdfIn PDF document text
    • http://cmb-eco.com/kugekarofawa37k.pdfIn PDF document text
    • https://cdn.sqhk.co/vonitumefide/FA0halU/samsung_notes_apk_mod.pdfIn PDF document text
    • http://kowesaxulenim.22web.org/woruniliwezinijupubu.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/4618142.pdfIn PDF document text
    • http://lujuvudav.22web.org/rezultate_admitere_academia_de_politie_2018.pdfIn PDF document text
    • https://sunivisoxeban.weebly.com/uploads/1/3/4/4/134493344/mutakixige_jubexoxuxaxo_wegiwiwataxifid.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/pomaxa/mofiselamaxivew.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/dukuvaforudegarasut.pdfIn PDF document text
    • http://faxumev.epizy.com/african_catfish_farming.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/how_to_read_dictionary_pronunciation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/reconciliation_report_business_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/21959554967.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/detailed_design_specification_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/xevulupegajezumudu.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_off0000f541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF541 5628 bytes
SHA-256: 46e82d177d1826b0d0f7f3c6c3714a646a6c7d3e5c959fb09cd4770bd3736070
font_01_sfnt_off00010865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10865 10184 bytes
SHA-256: 7fda883d7dffa7268a2c19707840b7dc087c74cd8d27047b7c7d5f7bd1387032

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