Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2fb4de97c892ce…

MALICIOUS

PDF

45.1 KB Created: 2020-10-17 11:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 145ae08ff077b084bb42a33074d27bdc SHA-1: cdd2cc1f22f186240130e1276c82257321fa64ee SHA-256: ff2fb4de97c892ce17dcd262cd4e864be46253dba25e86695655ca4a30608e6a
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://cctraff.ru/strik?keyword=10.s%2525C4%2525B1n%2525C4%2525B1f+almanca+ders+kitab%2525C4%2525B1+cevaplar%2525C4%2525B1+ata+yay%2525C4%2525B1nc%2525C4%2525B1l%2525C4%2525B1k In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f871c627cd3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370052/normal_5f8a903cd3c4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f8a21c6b2d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374380/normal_5f8957d667838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369630/normal_5f885b190bc79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f88a16f07961.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5f883cf825ae5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f884bb13d340.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/66a756e7-9a5a-4f52-9d49-21a5f5b33feb/dixozepuxafevejewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f27dbcd-9a1d-4229-abbf-8b5a8e3f4abd/19744445158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f084ef88-b899-4795-8db0-3e6dfac5f9c0/jupetogodom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ee21c77-f0a9-48b6-b2cd-dd77a5be9325/56264537851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3afdbc8-7e9f-4859-8201-b0b2fcabb0af/rezefegulonuwomif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b24f5a8-30d6-4aa8-8c73-5c9a31d7915b/tuloper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49a42c0a-5b62-4129-97ff-572be71a3119/73742769435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ff22664-32fa-451d-abfd-9950d5dfbe1d/puwud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a44aaeb0-0fec-4408-a38d-da3af55b8649/wudikutavexupulasatameti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2d57ef7-e31c-414e-b99c-ceebf2892b4e/resuwuzireravigogukizoleg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/948926fa-21ef-4f63-8b61-4dd4e9fef9a5/tiguf.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_off00006751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6751 5832 bytes
SHA-256: ad764e029f1353d343a4a22b1d0fa594b9ef205aa1389d1f2eec21043c8aeb47
font_01_sfnt_off00007b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B16 13004 bytes
SHA-256: 95ffd7ecf12ea716c79dee47b350da9234893394ae6c7badfb1ce76164dd8250

Open this report in the interactive analyzer, or submit your own file for analysis.