Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3917895da5ee59e…

MALICIOUS

PDF

66.0 KB Created: 2021-01-31 08:33:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a9f451942f1c59f59414ddc7f943ba6b SHA-1: 61e8836322d2da5265b049cd1e238a246a1f8feb SHA-256: e3917895da5ee59e15f02a4f91beae763f71fedcea5d43613f5bfedd62db458b
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://maypoin.ru/wb?keyword=ultimate%20freekick%20mod%20apk PDF link annotation
    • https://cdn.sqhk.co/ropikenetu/bghiFiv/natural_religion_history_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/nilofixogezu/7dei2ie/mozuponorobesivixe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485309/normal_5fccd5eb1e725.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451369/normal_5fcf0fd793800.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451762/normal_5ff02960723a4.pdfIn PDF document text
    • https://cdn.sqhk.co/kidirugolo/hijjicw/domain_name_history_lookup_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464067/normal_60092b540c3da.pdfIn PDF document text
    • https://puvomowaja.weebly.com/uploads/1/3/4/3/134318832/lotewopefa.pdfIn PDF document text
    • https://tozikogok.weebly.com/uploads/1/3/5/3/135330875/fajakufiwi-tonegozixuxenu.pdfIn PDF document text
    • http://reborasiruv.iblogger.org/2571046217.pdfIn PDF document text
    • https://cdn.sqhk.co/wumigapinido/gjgogcr/sdge_gas_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/ijajcHf/banekirunet.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/roxawo/crowdstrike_earnings_report_date.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/5260724534.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/texto_argumentativo_ejemplo.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_off0000c489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC489 5176 bytes
SHA-256: eacbf948240a40d530591342758efee3c531d82d729f31c79414ee06f40812bb
font_01_sfnt_off0000d616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD616 10996 bytes
SHA-256: 220b373b8b67890dcad90ed5bcd5611b3343e1331ccdf7e7e9d790e5a2184888