Malicious PDF — malware analysis report

Static analysis result for SHA-256 cffd0e63bf84165b…

MALICIOUS

PDF

48.1 KB Created: 2020-11-09 08:38:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 2de00964182b1bc32a6a6fbf2c7c1f19 SHA-1: 2f7a89042886694843b28c74adeb64b608676bce SHA-256: cffd0e63bf84165babcae3300f23885e81da03a2d8f280f7b44618d2bad48093
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=snap+on+solus+ultra+update+free PDF link annotation
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/voziguna.pdfIn PDF document text
    • https://dedotomonifagax.weebly.com/uploads/1/3/1/6/131606429/3779580.pdfIn PDF document text
    • https://xemupawiked.weebly.com/uploads/1/3/4/3/134321325/wedekizesexexakamuxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://falikajudepi.files.wordpress.com/2020/11/rasemuvix.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/beavis_and_butt-head_do_america_tom.pdfIn PDF document text
    • https://semumawi.files.wordpress.com/2020/11/8950735449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baf10e64-fc46-42c8-b6d5-b06ed4156ebb/82555514630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e866b6ad-d14e-41d8-b914-c98d03c13798/61335245233.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/44902685241.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/77629996853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad94386-393e-4477-8d3f-95df6ecd3691/37388780448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e896dce-61cc-40ff-bacf-31d66fefc44e/bewawin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f868a18-8db9-4f11-8bdd-87bfb9c61da2/kapivebinejiweluvijoguf.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F1 5136 bytes
SHA-256: f9eaccb5fbf98423e2a5d35f5d991ea37509a6b2df0e9411605b4c7347b7a8b9
font_01_sfnt_off00007777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7777 11328 bytes
SHA-256: 97e2d056a9bee1ac5fc9a46e904e918a2b1479e2719684faff966465a68bf65e
font_02_sfnt_off00009e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E51 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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