Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f4480c70bf7803…

MALICIOUS

PDF

61.6 KB Created: 2020-11-10 08:58:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f0b9baa623d104b10ff33e9da51c3bda SHA-1: ab10a2b748d4227c827f89e047e1a98b93f6f44e SHA-256: 30f4480c70bf78036246fc514bce83c9b599b6788a20be4fa481831a675a22d9
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/aws?keyword=project+free+tv+movies+and+tv+shows In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5f9894d24fe59.pdfIn PDF document text
    • https://pibazafefudo.weebly.com/uploads/1/3/0/7/130776509/fabeletijen_nosebidamu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5f9003fbaf261.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392857/normal_5f9fafd195829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405650/normal_5f94c60c10917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375705/normal_5fa0a8ff27fa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450047/normal_5fa0844de101e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f9853d0b16c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412382/normal_5fa81ce16aad2.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/fekojoxu_pavexifikaweke_laxakupid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/23c5a62b-abef-4afb-af49-1893844d0d2b/tupuzevelanifi.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/ti-84_silver_edition_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/88425690779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aaaccae-5ff7-4592-ab64-3d412c89cae4/59966575527.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_off0000b389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB389 5456 bytes
SHA-256: e6ea6a288dec8e1a96d5d4e24cbe5c91ad427a57f4759e3483856f4e0572b64d
font_01_sfnt_off0000c60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60B 10540 bytes
SHA-256: 6575d9a7a071b6f60fa545418bc6ed7e2c8fa2fc473264c35336ad240a5636a8

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