Malicious PDF — malware analysis report

Static analysis result for SHA-256 0569e1d463ef0ea0…

MALICIOUS

PDF

85.8 KB Created: 2021-01-03 22:13:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: b4c77e23380f39eedc58a78013147165 SHA-1: dddc8a8d1f3ba838033a325ab9b93b37a8cdf067 SHA-256: 0569e1d463ef0ea01d2bab190e77876abc997443f8c029f38bfde5bec76e83d6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/wb?keyword=did%20you%20know%20just%20facts PDF link annotation
    • https://cdn.sqhk.co/lasesekov/ScUmMGm/totona.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/bhdZnb1/cut_up_lyrics_ned_s_atomic_dustbin.pdfIn PDF document text
    • https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/7c43be7fa5a6e.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/minaxigevani/find_police_report_houston.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b9c756f-09de-4c58-905c-accde5bb7e4a/digital_marketing_certificate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd95d70c-08e1-40f8-8c40-0986d1e6a27d/zadevepinela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58b6a243-3180-467b-8bb7-2a2a8426f7e8/jipizasobosugijug.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/78388755739.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6f4a31e-d2ed-4f55-b147-82cc01459e7f/california_school_holidays_2015-2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/603535e5-7105-482f-b5ca-01b6027dc949/rejevotanet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3378a0b1-313f-4138-a51f-41c1fc0c0bc1/bavuzil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea5f28e-df54-4e0d-849b-6aa0b21a86a8/reflexive_verbs_practice_worksheets_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/382ddea7-ec12-4513-9b7c-9037056a6b4c/jurower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a902889-533f-4183-a726-afbb82134b29/fast_and_furious_turbo_charged_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a9e7c9a-a419-496e-b9fe-7c463137d7a3/13th_amendment_apush_chapter_15.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_off00011301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11301 5220 bytes
SHA-256: 32f2b080201b29a8bfd78a1ac7a9114d6d67194c26a2af18a87a36fa8c0ea355
font_01_sfnt_off00012505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12505 11032 bytes
SHA-256: 97c232da0ee45111d498b9156ef1601db7d46fe7e4aa80b0c74c4f3c7a144e82

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