Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8656ad28ed4c0d9…

MALICIOUS

PDF

41.3 KB Created: 2020-09-11 00:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b0f9b650d45f135c0cc0386fc74bd1d9 SHA-1: 5093add0c93d9c3b7da67d8acd201a15927aaf2e SHA-256: d8656ad28ed4c0d97e30901865ed65a0372e9b57c70b8c9a9bfc703d66762836
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/pify?keyword=nielsen+report+2018+pdf In PDF document text
    • http://files.chosenoneministries.net/uploads/1/3/0/7/130776735/bepazumigojese.pdfIn PDF document text
    • http://files.vineleavespress.com/uploads/1/3/1/3/131383823/togufatoverefig.pdfIn PDF document text
    • http://kunuruku.breedengallery.com/uploads/1/3/2/7/132740829/7213947.pdfIn PDF document text
    • http://files.literaryfolliesgildedstrumpet.com/uploads/1/3/0/7/130776021/tadiwotimewolab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d3b3e9e6523146d191ab8bd65508d732.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cbdbb6_f5a0d0ff507745a9b3e0ca68b0aabb44.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c8720849d8cc43cc9628223bf32455db.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/83e24f_5c797b79b3fc488dbb1a7493413f3a61.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/db1da1_34bb460c240d4c5fa460ea0af6a77f4e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f5892c_52139a5073824afba32417afcc2f4873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4923/7145/files/kptcl_exam_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/sawuvopidavagame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5879/7471/files/47537559006.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_off00006454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6454 5316 bytes
SHA-256: ee84753c61626a363b1149380365456358cf4033f10dc3d1fa5bd28e9505dc79
font_01_sfnt_off00007687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7687 10112 bytes
SHA-256: 9ae904b5c960fe283b2691e7ef253daa9e242162f93b34e570263df621b4229b

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