Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12fb1504a935479…

MALICIOUS

PDF

69.8 KB Created: 2020-11-11 02:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 05662bff9cdf6614b3e57f1035c6bdcf SHA-1: 2d5df7574232655770429755f928cc3de54de911 SHA-256: e12fb1504a935479e5b1078d53e882e66b83e7838433d4aed0aac4f69252f398
254 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
  • 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://traffking.ru/aws?keyword=art+definition+of+scumbling In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/xududev-ledavodu-jatulivarolaxe-bixebenal.pdfIn PDF document text
    • https://veborikaja.weebly.com/uploads/1/3/4/3/134317734/1923321.pdfIn PDF document text
    • https://latopilufazi.weebly.com/uploads/1/3/4/0/134017217/95b0ff065dcaa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e28efcc3-4231-4edd-b283-058e44b4d0b8/how_to_stop_ccleaner_popups.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/el_zorro_isabel_allende_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/bien_dit_french_1_workbook_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6553f8a1-9ba0-4a55-9f41-1df1e22f9de2/the_force_awakens_novel_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b128efd-47b4-4023-b0b0-1a15e51a9378/tafaxuzepigupumikuvono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91447cbd-d184-41b7-abaf-1eab1b3b229d/94113652949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfafad40-5364-439e-8d3b-42db74bf8721/stem_middle_academy_facebook.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/59567451815.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C1 5144 bytes
SHA-256: 6739a238e8cb99235c5e33aa7a3fbc22785666287be9e1476be45cbc4db43c5f
font_01_sfnt_off0000d924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD924 10460 bytes
SHA-256: ba5dcdc4cc31b7808d8602bd90a51448a02bde4a056d58ce522f67dd62bdabd6
font_02_sfnt_off0000fc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC92 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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