Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1469e0d90594e58…

MALICIOUS

PDF

72.5 KB Created: 2020-11-13 08:48:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 1a0ec91689f3d2e206c7fe2ef9d38421 SHA-1: 501a01d49c1f2887bf6bd951356c2df402398996 SHA-256: c1469e0d90594e5890b11c8156244b286a1907405570cfbcfb8f1c87e56054ba
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://gettraff.ru/123?utm_term=greatland+4+person+tent+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4451368/normal_5fa6cf20a428c.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/a47f8921-7b12-46f8-b7de-112027ded71e/xekapalogola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bea493a2-78f0-4bb9-aaaa-68b559fea516/linux_basic_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5f6d556-907d-45d2-b4bd-757355833702/lijusuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa62e63b-969a-46cf-b338-c1ff8dfe5c48/truthfinder_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/module_7_us_history_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4df1d27-026d-496f-8898-3f85efeded4e/41907084590.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dae77a85-374c-47dc-9589-a1536100ab21/avid_week_at_a_glance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/923d2bc7-f241-4aff-a94a-e5408f37e1f1/52496537748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d58c2267-9743-4e78-a941-c33712967bc2/wepesozuduxibexorolutato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7e074ad-d038-4d86-a39d-bbcf10cad83e/77559571809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27c78204-2a53-432e-994a-5daf0ad9b0d7/36825688275.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/mixezi.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_off0000de71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE71 5188 bytes
SHA-256: 90a8652ce485a1f78d12c015c3e39ce405397bc59d231ba7c38ed7d5b2326560
font_01_sfnt_off0000f029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF029 10868 bytes
SHA-256: f618e36b8a387c83fe8e6f6f9bc3b1f52493118ae688dc5f0bcf51f97a18ec2d