Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c6274f4191f94b…

MALICIOUS

PDF

70.0 KB Created: 2020-11-10 10:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 46080ba2a245e14eff9b5ad039866854 SHA-1: b32149160e854cfe94a27705ce6b96bf6b43dc57 SHA-256: e9c6274f4191f94bf42c333c3a187f314b480a69f8a0e138eec2e50ef60b66ec
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/aws?keyword=3f+ul+gear+lanshan+2+tent PDF link annotation
    • https://xesapidad.weebly.com/uploads/1/3/4/3/134346602/ninigazod_nugajiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388037/normal_5f94725240645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383577/normal_5f9ecba38f301.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_5f8f3f21193bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423757/normal_5f9802cde7247.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5f9b47bba1e41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_5f8836b19e549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_5fa75dfacf82c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460972/normal_5fa5f377cf5b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372955/normal_5fa1f33227a0e.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/13a50f89-64ba-4710-bbba-3d1183b17a13/faduk.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/feminist_theory_reader_4th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/ninja_kids_tv_movie_power_rangers_remastered.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c40b49f-5f10-42d5-a2ac-6cf0e68e6ed7/rawedipurasixejesuxolin.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_off0000d494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD494 5232 bytes
SHA-256: a53d7dc351d3de629ecbf2d6e851735c6ed86c8eaecd0e39023e2f97f0712a3e
font_01_sfnt_off0000e65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65E 11108 bytes
SHA-256: 281cc7ab0aa90f10e2221ef620c69055efb0f178a9949c47097559c43bba5c0f