Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff8940d7dd00993…

MALICIOUS

PDF

34.4 KB Created: 2020-10-12 08:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9d4c9dd21cc61e8bb4865b33893933c8 SHA-1: e1159e40a7926b1088f705c6b9fcb7b86903c0f9 SHA-256: bff8940d7dd00993bb081bcbe00c02d246293ba00c73366682688a3e93de980c
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://gettraff.ru/strik?keyword=captain+america+the+winter+soldier+english+subtitles+subscene In PDF document text
    • http://files.ildjservices.com/uploads/1/3/2/6/132681865/20f47a8d236882.pdfIn PDF document text
    • http://telumab.solidinvestmentgroupbvba.com/uploads/1/3/0/9/130969242/paxosatotugidu.pdfIn PDF document text
    • http://files.creedewoodcarvers.com/uploads/1/3/1/6/131606435/002363620.pdfIn PDF document text
    • http://kidafoje.dralexischesney.com/uploads/1/3/2/8/132814742/gikek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6940/9946/files/diamond_hoe_minecraft_png.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2731/2035/files/prayer_request_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5420/3031/files/showbox_apk_2019_download_android_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98bb7efc-86ff-4ec2-b690-444727766e73/92389738711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aaa635d-2045-4efd-95e7-549c7e0f1ac5/sesigibowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc0c49aa-7760-4692-a846-db50e1062e13/9529493865.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/770aa3cc-5fb7-411f-9676-2ad10e2adf40/sumomalepesesevibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9050/0001/files/kewudotewuvuxibebewev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6172/9685/files/31622938317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7152/0411/files/gakaxuvuxi.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_off000047a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A0 5624 bytes
SHA-256: 9596e7113d5fab0b08739fe3b15bab03fbb4c77532339bade67e2e67daeaafcf
font_01_sfnt_off00005a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A99 9816 bytes
SHA-256: 9f25d7ca56ceceb2ec750e95d92a915d9074395da6768abd0a751928bc51c1ec

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