Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0fa1550ee6fa30…

MALICIOUS

PDF

48.8 KB Created: 2020-10-12 00:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b10c1dcee51c8f993fbbc9a67c8820fd SHA-1: 79c60a82e3d0d7234ec15f7f01868e945b599d43 SHA-256: fe0fa1550ee6fa302f1805528ff51281a587cca907c1f9a5e962e2739652e568
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.club/pify?keyword=brisa+evap+cooler In PDF document text
    • https://site-1036838.mozfiles.com/files/1036838/xelutomonelevakapizarog.pdfIn PDF document text
    • https://site-1039320.mozfiles.com/files/1039320/nilazijejopolo.pdfIn PDF document text
    • http://piroze.burtthompson.net/uploads/1/3/0/7/130776068/9907966.pdfIn PDF document text
    • http://sufuruw.sarahgreenall.com/uploads/1/3/1/6/131637372/guzew_keleniso_xesebajanixo.pdfIn PDF document text
    • http://files.oswegoeastmusic.org/uploads/1/3/0/7/130775448/2283200.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/1/0485/0876/4321/files/44449037856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/2439679574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9685/1103/files/17018159456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4664de1-0083-45e5-a02e-6eb960d23dcb/rapure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1dd0669-02d9-4346-80c6-ea165c9d73b4/vorumowukurerogugefifajej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7d9f313-2960-435c-a61e-a91d1c6d6cb6/54628912576.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_off00006922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6922 5036 bytes
SHA-256: ae2d1180e34cdae35f8b3bd70383547f80e2c1f8283deaced681e35a155b2f5b
font_01_sfnt_off00007a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A53 11172 bytes
SHA-256: 164ba77e4e8e04551211c8ccda5620e019211fa0a0801fa108622fb694e79efc
font_02_sfnt_off0000a07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA07E 16312 bytes
SHA-256: 7b25070ae683d8be13406e8262b27959f9716a799c507b5071136123b0b931a5

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