Malicious PDF — malware analysis report

Static analysis result for SHA-256 a12020700485e31d…

MALICIOUS

PDF

68.0 KB Created: 2020-10-05 06:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f0a0b06ae3418718dbf0f1d566b16c9a SHA-1: e447feabee4eebc48de4c8c68a75f65d3a4b902c SHA-256: a12020700485e31d47903b824903324e70fed87d05cc2411f5ce1baf43bcb267
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ggtraff.ru/strik?keyword=raj+constable+syllabus+2020+pdf+download In PDF document text
    • http://files.entacobowlsclub.com/uploads/1/3/1/4/131453136/883601388f07077.pdfIn PDF document text
    • http://files.engl.kangenwater-detox.be/uploads/1/3/1/3/131379716/e974b9.pdfIn PDF document text
    • http://jibefupe.kensfirearmstraining.com/uploads/1/3/1/6/131607110/3333457.pdfIn PDF document text
    • http://files.forasplitsecond.com/uploads/1/3/1/1/131163620/a61b69f0c.pdfIn PDF document text
    • http://files.bugoutweepholes.com/uploads/1/3/1/3/131378776/9d52a3a3b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe50f8f-aab8-4a70-bc54-6e967c12cb44/21107553036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d9fa03a-8c83-42e9-8417-01ceb00132a5/jojowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3f1306d-83e0-4a89-a7c0-9e642f06d2b6/34038208719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1630/5312/files/deviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8317/3530/files/69947761612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2625/0917/files/cox_remote_codes_urc_8820_moto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9357/3288/files/xegesaxip.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7294 5744 bytes
SHA-256: 423eb349e1fdc7f58a11d3164a2cf288ba233bfd5eaa2164d07d722002295584
font_01_sfnt_off00008654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8654 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off000091af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91AF 5684 bytes
SHA-256: 2501f70a89f65cd47d9b9c4f2ad7e50bbfd445766bd01d80d836ea156d6223e7
font_03_sfnt_off0000a151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA151 10212 bytes
SHA-256: 09cd2971ac0c7d9f7c301fa045ffa8074c2e8dbf2177dbeb8415190e740b8797
font_04_sfnt_off0000c46a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46A 16696 bytes
SHA-256: d9c673429e3d6cc4dfd72d1f28ba0f6a0da4e96cd9e5c88bfd699bd0eeb28755
font_05_sfnt_off0000dbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD6 12296 bytes
SHA-256: 8ae413761c7b192028b7f78d4dc78c25d41e9b86c91f2ddcd18854ec2f513325