Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3bb2f487efbd86…

MALICIOUS

PDF

49.6 KB Created: 2020-10-09 06:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-14
MD5: 0af1f8257d9fc3da4bd948bb4d8c09ba SHA-1: 120de66d59aafdb2d8686c36647d069d24b9c17b SHA-256: 5d3bb2f487efbd86d4932a5a1fddedf2b3b8e3d835be4d28d0a85baecfd158c1
202 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/strik?keyword=schlongs+of+skyrim+light+se In PDF document text
    • https://site-1036816.mozfiles.com/files/1036816/50303706412.pdfIn PDF document text
    • https://site-1037142.mozfiles.com/files/1037142/kazanasezamedezewe.pdfIn PDF document text
    • https://site-1039273.mozfiles.com/files/1039273/xugamadufomekuvute.pdfIn PDF document text
    • http://files.kathrynfree.com/uploads/1/3/0/9/130969700/083a3897.pdfIn PDF document text
    • http://files.ikkarpublishing.com/uploads/1/3/0/7/130776485/lipilosavisu.pdfIn PDF document text
    • http://files.homesteadheritagecoop.org/uploads/1/3/1/3/131379856/bomiwizolel-lugijad.pdfIn PDF document text
    • http://lawufu.shadowcreekchoir.com/uploads/1/3/1/3/131381762/056378c.pdfIn PDF document text
    • http://files.dorothyfreed.com/uploads/1/3/0/7/130740374/nopuza_judixe.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006df4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006df4.bin)
    • https://cdn.shopify.com/s/files/1/0434/5289/1297/files/jamedifipovurosasot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8673/6286/files/39079936595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6631/2854/files/lagedotetedafonut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/44238676759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a945cd01-b540-493f-8e6f-451f293a0d39/19325524257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54a2d51e-461d-4f4a-813f-2147589bb590/bazenuwesakozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40a3fe06-5394-440d-b438-f4e94a754935/zupijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e3bdbf1-725b-4c2f-9d9e-47e1ccda2949/nirerosop.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 extracted file (font_00_sfnt_off00006df4.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000a3d7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000a3d7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF4 5356 bytes
SHA-256: 227dc1eb845111b978fd130639656c92f39b79d0e595c78233f8b9a90527049b
font_01_sfnt_off00008010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8010 10444 bytes
SHA-256: 5565626fd0c799206268d30063a4b37e38bf219f3df620037d1362f2910bf0ee
font_02_sfnt_off0000a3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D7 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15