Malicious PDF — malware analysis report

Static analysis result for SHA-256 4206319ee423bf6f…

MALICIOUS

PDF

72.2 KB Created: 2021-03-02 05:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 51353403e2095f0c65128eb3c47ebd74 SHA-1: 59a46cb9b584293c9fc2a9cc67929d687180744b SHA-256: 4206319ee423bf6f9562ae0d17ac9fffa8d6253c484d817b14bb099472f50d46
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://xajibur.ru/award?keyword=my+hot+water+heater+pilot+light+won%2527t+stay+lit PDF link annotation
    • https://xekariwunaju.weebly.com/uploads/1/3/1/0/131070431/pasijikem.pdfIn PDF document text
    • https://cdn.sqhk.co/dederubap/x5ghiii/extreme_sports_car_driving_simulator_racing_game.pdfIn PDF document text
    • http://pycnidwzxc.info/princess_colouring_book_mod_apkksy0a.pdfIn PDF document text
    • https://fumitalabojaluk.weebly.com/uploads/1/3/5/3/135399187/1901265.pdfIn PDF document text
    • https://xujopikaxatanow.weebly.com/uploads/1/3/4/8/134850499/fefegigepumowowodu.pdfIn PDF document text
    • https://balijijileg.weebly.com/uploads/1/3/4/5/134505585/tirurunenu.pdfIn PDF document text
    • http://allostar.buzz/how_to_focus_on_nikon_d520023xxo.pdfIn PDF document text
    • https://mesupajediruz.weebly.com/uploads/1/3/6/0/136051454/b3194e781a.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/mokuwanibof/zemeledun.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/79952494245.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/56276583180.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/excel_template_vacation_itinerary.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/congestive_heart_failure_guideline_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/basel_iii_regulations.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/36568803522.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/33864361381.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_off0000df57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF57 5316 bytes
SHA-256: a69241463150f2f2dcc81baa8a2e79f0f85a77a5d521391f1279710fd5889949
font_01_sfnt_off0000f191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF191 10076 bytes
SHA-256: 913353b4dd158ead2ae781348183acb355cc4a6ac7c583426f987326de3ac99c

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