Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c7348155779a59…

MALICIOUS

PDF

42.8 KB Created: 2020-10-31 03:43:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3eacbe1e56aa16c0bc35673351a51fdf SHA-1: d28974f65d3d887fd95a36c84f49233fbbdc370b SHA-256: f3c7348155779a59385ada0fbda831e4445594ae1e9be9ec737dcfcd37501aa3
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.me/123?keyword=rise+of+the+kings+cheats+2019 In PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/1323023.pdfIn PDF document text
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/regeseg.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/5daf65d3005d74.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/e8e05cf4-713c-4d80-a70f-46822a4d638f/zonetabefominewisum.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/vepirogifa.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/cancion_happy_letra_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/67177826857.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc0398a8-44ce-4a2f-ab5b-67e372043921/xefafitejimiriwike.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/kitunotorunanewajudobewiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b3e001c-44a3-49f7-acc6-490d5b1e2415/xedosejobodasiwuwoxiwika.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/geometry_answers_chapter_7.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/36901414623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3ef5842-cc01-4ab7-beb1-3df790a0ab0e/jekepujiroxip.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_off00006701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6701 5568 bytes
SHA-256: dad22886386661a168f3f475d1dd4dc7b39b0e6b56ef18996346d3814c2048f7
font_01_sfnt_off00007a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A02 10600 bytes
SHA-256: 93f2ad4c81580e9fb69516d4a1c52f7555ac51e01c170d906989e3a4d9b4fa7f

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