Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8af17854ee7ea25…

MALICIOUS

PDF

65.7 KB Created: 2020-12-04 06:30:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 79ae03a03dc90ebaf8c36e7bf1b9cc77 SHA-1: 166cc850cc4bf3f11a44089e7d81d1109e5220a3 SHA-256: e8af17854ee7ea2565060a5ce9c8a65d2bc157e9cbc40b4130d75755ee7dbfa0
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'traffine.ru', which is flagged as malicious. The document body, though heavily obfuscated, appears to be a lure related to a 'Kirksville weather report' and includes a call-to-action phrase. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/aws?utm_term=kirksville+weather+report In 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/298959f6-1665-452b-a54a-10463b2069dd/bazulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/851da544-968d-473c-b8df-32b0588f2cf5/sternstunden_der_menschheit.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/84826691946.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/nuzimasozonifaleti.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2cecdff13940aa24c0152/t/5fc6512808845d092461da0f/1606832432412/hearts_freezing_blue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2cac5b1-babd-4cf7-ae97-6d3d76564174/chakra_frequencies_tantra_of_sound.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c275dcc0-48c5-45c6-8af2-ed2fc84747dc/pufavogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3827f8fd-45fe-4367-bd66-ebf3d35213b0/98668311248.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/39022866745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5b3e25c-8abe-4834-a5b0-c8feb1b1199d/calculadora_cientifica_con_grados.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a66471c-3767-4f14-94e8-385845061fc6/meal_plan_template_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/080a2b0e-7a44-4f01-a0ca-bcbe70dc24ae/gopude.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_off0000c35e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC35E 5092 bytes
SHA-256: fdce641069c005a97c51eaad02712ab73e55a8a3bd25ed7becc123b64f61583e
font_01_sfnt_off0000d4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BD 11308 bytes
SHA-256: db7408860087ab859c3c9987ffcfbd371e24a0a583fa9b66d68cd4aa1c7b1747

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