Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0706577f7efbbc8…

MALICIOUS

PDF

73.2 KB Created: 2021-01-12 10:30:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 69878cedb2762d76d96a22ea550bca07 SHA-1: 1a15406d78f8c1425440e859bec912ce2839e513 SHA-256: d0706577f7efbbc840400f289cce6bbe6c2f41eb1e5e2833b5f0bc6cc7435db2
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are flagged as malicious or part of a link farm. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically identifies a link to 'gettraff.ru' as a malicious redirector. The document body, though heavily obfuscated, contains text related to a textbook download, suggesting a lure for phishing or malware delivery. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=clinical+hematology+and+fundamentals+of+hemostasis+5th+edition+pdf+free In PDF document text
    • https://site-1179057.mozfiles.com/files/1179057/moto_x3m_pool_party_kizi.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/IZqjbhb/pulsar_150_second_sale.pdfIn PDF document text
    • https://site-1084368.mozfiles.com/files/1084368/ring_doorbell_pro_instruction_manual.pdfIn PDF document text
    • https://site-1172077.mozfiles.com/files/1172077/79316813876.pdfIn PDF document text
    • https://zikepasut.weebly.com/uploads/1/3/4/1/134108801/bemivufi.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/fovezewi/cartoon_boy_3d_model_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/apache_kafka_2._11.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/vitukosanowujovufe.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/free_printable_may_2019_calendar_templates.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_off0000de61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE61 5700 bytes
SHA-256: b604c3aabf45231a289892f95196910dc953af77dbd09c3dd2bcc4e9bd83a9a8
font_01_sfnt_off0000f1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AA 11152 bytes
SHA-256: 59b7b089134b10faa42802d91d3efb2ce5be97b27fc9ec45a67b095d80d029d3

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