Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5b06d826c3c254…

MALICIOUS

PDF

50.0 KB Created: 2020-10-16 02:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 47090510825e6c9b6014adfb3492afc2 SHA-1: e8d69b8958be61ce927a5ed1fc7f78937b6f1bf0 SHA-256: fc5b06d826c3c2544015308f0d9b05027b4dd5b734f7f237259a28db78548a94
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely intended to lead the user to a phishing or malware distribution site, masquerading as a legitimate form.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.club/pify?keyword=self+declaration+form+pdf+rajasthan In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_5f88bfbe9a096.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_5f88dd1987a84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369310/normal_5f885a20bed3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f88beeb1c2b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f875f9235f45.pdfIn PDF document text
    • https://site-1042840.mozfiles.com/files/1042840/25798383518.pdfIn PDF document text
    • https://site-1044071.mozfiles.com/files/1044071/74482157290.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/624a3fab-1a6a-4212-b0a1-7730f4ef3037/taramasopalobofimeja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b231682-d2d8-4e35-a8db-4464ce1dc257/mefepikuvatosege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/996f0894-ff99-4e50-b29e-c55d858a487f/fizaxizev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/196429aa-3e05-4889-a8c7-c01e42a332ed/71594797888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01dfa1fe-16e7-4143-a8d5-56d39d949276/53751115414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdc28b71-1222-46b3-8274-d0c80dd9fde8/gevejefiwadajaxifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de4c82f0-6314-497b-8a3a-b857d4437610/sopenapakaridusozoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb656094-5c00-4005-abed-516b6ae3dba8/72561147604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/453c93d7-5001-4552-9174-4fdac21e6f15/74918491508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e59d69a-fcdf-49db-ab02-cc05b9806501/fubekonaruzelanoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/875368a9-8f06-485e-8e7e-7a89f190242a/87387314426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f7615bc-2524-4be7-85f8-b5c2b205d772/sotoxijuwij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f00e6452-955d-4355-adc5-182219ea1668/30171170299.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_off0000781f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781F 5572 bytes
SHA-256: cc1c24c369eb754056c3481d94911ccd7639b638225479aa7be71e4dcdecf55d
font_01_sfnt_off00008ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE4 15208 bytes
SHA-256: 978cac7a8276659be2c029afe36b17614286d09f54432db701be38e49a1b78cf

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