Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0b566d102b5430…

MALICIOUS

PDF

47.5 KB Created: 2020-10-06 16:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: cd7904f53c0fcb0d2f8cb10fdd146c88 SHA-1: ff33d818660211bbe56577128540e5c76813c9b1 SHA-256: 7d0b566d102b543015786e7968fa38334d8d9cd554e4535bae870021786e8dbc
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://cctraff.ru/strik?keyword=wedgewood+stove+user+manual In PDF document text
    • http://files.theherbalkeyapothecary.com/uploads/1/3/2/6/132682555/vozepatuzuvu.pdfIn PDF document text
    • http://files.movingmedicineali.com/uploads/1/3/0/8/130874658/jogiwitenim-lulopewixiduza.pdfIn PDF document text
    • http://files.daraebaek.com/uploads/1/3/0/7/130775952/9369585.pdfIn PDF document text
    • http://josis.catholiccharitiesvc.com/uploads/1/3/1/6/131606337/tafeze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/420bb1a1-282d-45cb-91cf-0930e8e8aa27/wofotedezujolagav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06df9e5b-39b8-40f8-a52a-5d1e6746a60b/13328925201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfbd39a4-e564-432c-8b58-04ddc563ffb3/mukizafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/816b6189-38a6-49a6-b9a5-71def27d85ba/migibalatuxaxowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/relative_dating_worksheet_principles_of_geology_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1478/5704/files/33436557425.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6623 5308 bytes
SHA-256: f979c5a18d6bc632f2e50b3bdff369fa7fc49f177c3ca8ef21c0dfeffb4bf845
font_01_sfnt_off00007835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7835 10472 bytes
SHA-256: 2573180c86d9d6f87cd716deeafc6933d42bdbdd04da1c8875356bdc52eb905e
font_02_sfnt_off00009c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3F 16068 bytes
SHA-256: 5338b60dac2ddcc9fbf81734882903060897ff8c18563aad6864a581beec55c6