Malicious PDF — malware analysis report

Static analysis result for SHA-256 f51f30d1430b19db…

MALICIOUS

PDF

40.8 KB Created: 2020-10-09 04:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b7a3beb6d35ed2376d3c584c696a07a6 SHA-1: 63377b118961b4f5901d9d05304a81d23c36463d SHA-256: f51f30d1430b19dba7c8407fa8f1fe2ca91f542adc72de76fc70ebe63a69f0b6
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/strik?keyword=akhiyan+akhiyan+nu+rab+jane+ringtone In PDF document text
    • http://bebovu.jewelwing.com/uploads/1/3/1/0/131070374/zabutonejabadibuwipu.pdfIn PDF document text
    • http://zubotex.aprautobodys.com/uploads/1/3/0/8/130815097/tivabe-wadas.pdfIn PDF document text
    • http://files.triplexfm.co.nz/uploads/1/3/0/9/130969080/mejapafamel.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/fafe817f-d3bb-4484-b491-2c34f13e2ade/ruwupoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7a71d51-7a74-44e7-9688-97377164ff55/zafevivetuzabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28486eab-db9e-4c53-af4e-e51ef91ac6ce/luwevamedovuri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/283d7f7a-208e-4b86-95ca-0e8f6d4eeff1/26803466894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28406252-11de-48a4-8d63-41c9449736fd/bagedojevefesalapawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f3c509-9d2e-4bf5-9fff-e8e45ff6cd25/80398014605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbbc4e25-56a1-428b-8e7b-075727199284/44479925697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16536d1c-7110-44b6-931e-718569210123/nijopasul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/418e759d-267b-4208-bc85-4560bf6efc9d/jimumawobofugij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa2c8fd1-37b1-4253-8676-36e7741a07e2/315447644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75dbf523-3796-40b5-8730-f8e549cdbf2c/95308709095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8afba31b-5c93-4622-bd44-19b47ce564c9/33642506315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d94af10e-f299-4cf7-94a2-c9052a34767e/10313611957.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
🗂 Part of campaign: jewelwing.com 4 samples

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5614 4988 bytes
SHA-256: d3329dd43246b0f264e541201136db831b39989f9fcdf345dad07d22f165489b
font_01_sfnt_off0000670b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670B 9684 bytes
SHA-256: 99a5acba3ebd51860ed28fe04db529bb44f2d0360d02d7e64f71e8c04ee665ad
font_02_sfnt_off0000883a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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