Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66260772bf456dd…

MALICIOUS

PDF

38.4 KB Created: 2020-11-04 22:51:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 59498584489e4cee768cb148d879a1a1 SHA-1: 452095d70d8bbc71ebcee18304006c6d1f5d8abf SHA-256: f66260772bf456ddf263acc0048b207285f8377e1113d945723348b980afdf1e
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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=unsupported+partition+table In PDF document text
    • https://liwobolavus.weebly.com/uploads/1/3/4/1/134131542/tojodawexeka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413111/normal_5f9d05a306fdd.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/zogafa.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/2403b60b-b625-417b-beee-29ce68b4439f/87684439001.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/mixesunedarulaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ad89bf2-226f-4c85-8bb9-317037ffab51/80572303604.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/53231185431.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/xisuv.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/92906265493.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/derby_city_classic_pool_tournament_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f9dc234-636f-4538-b7be-44a74d4147f9/kumuxotuwopaduvobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75770efe-1894-4e3d-8819-9dc1084242cb/8448295986.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/nordictrack_c2000_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/23387424988.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/greed_quotes_bible.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_off000059ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59EE 5084 bytes
SHA-256: 9577c08b562050f580986a80d00b72a64fad7165cc68decd3f1046eef01e72b4
font_01_sfnt_off00006b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3E 10000 bytes
SHA-256: 775a19b9e6b9b1853e1f5102ea38476cfb06f2d34048abd7bb369982f3ba00e5

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