Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e564a737b3162fd…

MALICIOUS

PDF

63.1 KB Created: 2020-11-06 04:04:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 82b56c6943ee81468ea58025136dc884 SHA-1: 19ca2f7f27d50c5efc0d28789bc7874ecdc9d574 SHA-256: 0e564a737b3162fdbcfbd6df495e83512f9c54f2c87c1af6aae96f3403da6ebb
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=words+for+getting+hurt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381751/normal_5f8d5dc48cf76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373004/normal_5f8dfa69850dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406170/normal_5f95eb09ccf18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370543/normal_5f8b29b79851a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f877fd97c78f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ad8200-db2a-465e-8be6-4ae29e72d699/56188426051.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/41850818528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789f0df6-5f02-4a00-9895-0120509ff9a8/1120423493.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/petite_camusette.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c5e32e-520f-49e6-bec5-26f37d113332/xonuleru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4438bed0-3ff5-45cb-915e-20c578439bf9/intercambios_virtuales._com.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/agricultural_science_book_3.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/nofagako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85ee9a68-36f4-41d4-b9d1-f6e5157dabc3/35307113393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a57faa80-5d60-47ae-a070-93a8629f00cd/the_doppler_effect_physics_classroom_answers.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://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn 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_off00006d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D78 5088 bytes
SHA-256: b2d365fd91dbaf587c9d0f61065d67bb32e5fc164e72c4a48d89f1921dffbd90
font_01_sfnt_off00007eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFF 4940 bytes
SHA-256: 8a112c21e6d723b79c64a785ec6498fd1f1343f519e902a49c80b9800c60bc67
font_02_sfnt_off00008f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F97 2644 bytes
SHA-256: 1e53ac68b53c38ceacecf3f1639f28b0cc23e038c9ddce9ad139fcad9643d2f1
font_03_sfnt_off000099d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D2 5880 bytes
SHA-256: 516a846a36346d5002b5c82abb026a0f581a981317046487c1ecd9c439874aee
font_04_sfnt_off0000a8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8C7 14560 bytes
SHA-256: c53934fc8a6475d8657ba7e00422b0bbae02c00b122e0f559bf1c7f3fdcac079
font_05_sfnt_off0000d4c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C6 17296 bytes
SHA-256: e4bfe0ff7657ce713763f2a9b21cd65f2c9544290960b3c27dcbe0076c4b7f6b

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