Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cfa6b9fdc52ab77…

MALICIOUS

PDF

66.3 KB Created: 2020-12-04 16:13:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a319ff0da1ca9b5d4dbd85baad67c192 SHA-1: 1242e80ad3bc69e2947981fb854c8fb17bbd45d7 SHA-256: 1cfa6b9fdc52ab77e5bf859c32f63f2288b60dd8ab083727292889ad72acd71a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/123?utm_term=frp+apk+bypass In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415326/normal_5fb3ded139c17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_5f951b1a659d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461761/normal_5fc08ed77bf60.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0bef3c6ccf69f325e9ee/1606290423334/cochlear_rechargeable_battery.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf57073570fb44d1f9b435/1606375176552/takanuvexivukoxorojadib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27d35510-f5ce-42af-9c00-f39c571eb1fe/humko_tumse_pyaar_hai_jiya_bekarar_h.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cf3a5e8e827d428d5c84/t/5fc0e71e173fb5383bc2e505/1606477598760/how_many_languages_in_nepal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4bfca24b06a7eb3181a05/t/5fc521383485235c866a1ab5/1606754617612/genie_promax_pcg650_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdd11855-2b54-4b92-b711-d6f04d8c536c/3614319839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10734ea8-3d55-42fc-aee8-2124c7afa61a/sokojejubuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a80766-5942-4585-a944-f54d9040f0e7/best_horror_visual_novels.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a586093b-10e3-4fcc-a7b5-de1a6657c781/california_dmv_release_of_liability.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc002e7e5c7695ca996b6a8/t/5fc3bd1061e25426e1a9d8a2/1606663441446/binedoxigoworono.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_off0000c90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC90C 5040 bytes
SHA-256: 03fb595dc6fc5120f3556e198f54567339446c55c478480823eddeed1979d1b6
font_01_sfnt_off0000da4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4A 10076 bytes
SHA-256: 125743f9f5e80f4a487f14a8e8f98db62615811c41f99b71dc88fbb32480f4c4

Open this report in the interactive analyzer, or submit your own file for analysis.