Malicious PDF — malware analysis report

Static analysis result for SHA-256 d83e0390539e0334…

MALICIOUS

PDF

60.2 KB Created: 2020-12-20 03:47:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3845aac15b9b3b3efa6271add87579bf SHA-1: 2d6160ee555c0c22f9ee5abd5d4695b8f85e9ee3 SHA-256: d83e0390539e0334180e0421d3877381a35160bed96db8c799f5ae630a226f93
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://traffine.ru/123?utm_term=what+is+saltatory+conduction+and+how+does+it+occur In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417419/normal_5fa1eca183abf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5f9b25d08b49e.pdfIn PDF document text
    • https://basivukapipex.weebly.com/uploads/1/3/4/5/134528325/zorumilurizunixapir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447436/normal_5fa3847f29da3.pdfIn PDF document text
    • https://kegazesawatodo.weebly.com/uploads/1/3/4/3/134378031/3958030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465274/normal_5fc162f0d648d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420930/normal_5fc353683f0a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382643/normal_5f8d44f81a7cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413865/normal_5fae8dcb50e03.pdfIn PDF document text
    • https://buwabasowo.weebly.com/uploads/1/3/4/3/134353515/momusigigobipawud.pdfIn PDF document text
    • https://gofikebome.weebly.com/uploads/1/3/4/8/134847018/514274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418584/normal_5fc2c45b20ea9.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/fa011253-0573-4623-a3f8-38ef4d5dadf1/rios_de_color_purpura_online_latino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73bba922-143f-4bb0-af61-d6e241083a94/dobosalabaluzesidib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3a6d499-1ad6-44fd-8cef-db456bfcdda3/11930565553.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB00E 5232 bytes
SHA-256: bd4eb539c5ed5f22ea7cf346baff6549d694cd122c47e51c9f49d54e9a01785c
font_01_sfnt_off0000c1ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1EE 10328 bytes
SHA-256: a0e0cd39c8b5959f44dce623a2cdac848985c201984dc9a8ec179c1730ab442d

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