Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd9bc12529809bd8…

MALICIOUS

PDF

46.6 KB Created: 2020-11-05 13:15:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 43f0a0db75b4a775c6a5ddd3c1b235aa SHA-1: 610ee3f6c80bebbb840d4c59115f11cf643ae337 SHA-256: bd9bc12529809bd8931c6116e726326cbf44facc1378b54673169726059f599d
94 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded URL `https://ttraff.com/123?keyword=evolution+by+natural+selection+answer+key+pdf` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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.com/123?keyword=evolution+by+natural+selection+answer+key+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374372/normal_5f95bb126644f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372101/normal_5f8c5174445ed.pdfIn PDF document text
    • https://gonupedifi.weebly.com/uploads/1/3/4/5/134524362/lefulofus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446647/normal_5f9fc5c99cb0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f8b52ec9297d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f879a67a5eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5f9003985044a.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/aee0e7964b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374689/normal_5f9045e0207bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuxime/le_syndrome_de_zollinger-_ellison.pdfIn PDF document text
    • https://s3.amazonaws.com/sezutuma/69820093315.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000636f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636F 5564 bytes
SHA-256: 9984fff426734dd0f6ac2399ea907bd30fbdb4c934660b45ce024f02e94471b6
font_01_sfnt_off00007682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7682 6284 bytes
SHA-256: 7b03f427b2d85ea126e2021f230f8294a8b59d8d9a9de2033a8f071f6e5dc703
font_02_sfnt_off00008abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABF 10104 bytes
SHA-256: a92b923f0732c7d23abe6fd3bcf7e4d9729971d5cde815e5e3e028c94803454f

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