Malicious PDF — malware analysis report

Static analysis result for SHA-256 b271530d416ffc8e…

MALICIOUS

PDF

43.0 KB Created: 2020-09-10 08:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2dd2c5b13870cb8ab6ceb54a1c26aea3 SHA-1: 352d61c62812400fe9b6b991ec0c86e186998b8b SHA-256: b271530d416ffc8e142391f9317d95c83f15ff4af0d01e29f9f6c310fb2996d2
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://ttraff.me/wix?keyword=bal+krishna+hd+movie In PDF document text
    • http://files.californiaskys.com/uploads/1/3/1/3/131381675/7844651.pdfIn PDF document text
    • http://files.art63lynch.com/uploads/1/3/1/8/131872055/b4723d60.pdfIn PDF document text
    • http://kuxafi.mikesmithconsultancy.co.uk/uploads/1/3/0/9/130969408/a27b0a.pdfIn PDF document text
    • http://segar.k2physiotherapy.ca/uploads/1/3/0/7/130776783/jaxosos-giwasaleg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_597334cfbf8640bda3fc95b1db107224.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_e1a2b99b75e348ca8fa1a0c5f35bb275.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b4a829_2963b3977c834c76b07540cf2e4d3f3b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/735424_58899fa8efc94e969bc35a00b9b587c6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a838c0_09272580627a4a0c80e2abfda3b0e087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3759/6580/files/miracle_thunder_2._98.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/61749381855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/2948/6757/files/xewupiwutifaxozakudu.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f515ca_4cd21daefb194e0ab7094243a518f1a0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a838c0_752558fb70dc428b82c78ed5c7d8c5af.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e33828_0a3fd69536194a108fbf6fbf00333836.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5108 4948 bytes
SHA-256: c9915d7e852258eadc38892e96f038ac4bb5a4229d5fb743d6b42d9925eabdb4
font_01_sfnt_off0000619a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619A 10948 bytes
SHA-256: a5c87989d2dac622fddfe630266d088e7faccb142cf830b59a2fa495b45c5f44
font_02_sfnt_off00008700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8700 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
font_03_sfnt_off00009501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9501 2376 bytes
SHA-256: aa65e15f1363d927efbc7c3a8454ca1c19e77a5ce0565bb9ed54ad7f336b1b3d

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