Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6881daab4a030b7…

MALICIOUS

PDF

37.1 KB Created: 2020-11-07 00:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c177d05e72c1a159510ff76d9bc6c08 SHA-1: 769f4871a2c4ab3015703e2535f974f574129d47 SHA-256: c6881daab4a030b71794a7c463eff94aef1d5b29f2ad34c6ed08b42c55cf9a99
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful website. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URL and the nature of the PDF suggest it's part of a phishing or redirection scheme.

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://ggtraff.ru/123?keyword=slauson+middle+school+website+azusa
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/7797768.pdf
    • https://woxejisuwu.weebly.com/uploads/1/3/4/3/134322210/7700998.pdf
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/mezevoxinokimuwamibu.pdf
    • https://cdn-cms.f-static.net/uploads/4385852/normal_5f97a0b5b41db.pdf
    • https://cdn-cms.f-static.net/uploads/4403537/normal_5f9d7662da036.pdf
    • https://cdn-cms.f-static.net/uploads/4393029/normal_5f8f42ce33135.pdf
    • https://lurabesuweki.weebly.com/uploads/1/3/4/5/134524451/9018775.pdf
    • https://repemigikaji.weebly.com/uploads/1/3/4/6/134608024/josufob.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kezemiradigu/27153324721.pdf
    • https://s3.amazonaws.com/zobuwubedak/crsd_canvas_login.pdf
    • https://s3.amazonaws.com/pazifetanegapu/rojatixipipup.pdf
    • https://uploads.strikinglycdn.com/files/823c1452-7b1d-464b-8f6f-f82799a70b57/12507903447.pdf
    • https://jopafez.files.wordpress.com/2020/11/lenesubumamafutavebujoris.pdf
    • https://uploads.strikinglycdn.com/files/87f63c01-c82a-4d9d-b71d-945c1f9b22aa/wudepugex.pdf
    • https://xijadijuf.files.wordpress.com/2020/11/verilux_happy_light_2500.pdf
    • https://s3.amazonaws.com/leguvefu/accountancy_class_12_project_work.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051e9.bin
a1fb0cdbc8fcaeede950f3184ec0421eb7d119533a7d6970dfa93401cb0a44e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x51E9 5468 bytes
font_01_sfnt_off00006470.bin
51d92e88580c50a8c12acf568a9a758b371cfa334f38034dd6481305c63c42e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6470 10172 bytes