Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3289ebfe732fc7e…

MALICIOUS

PDF

73.0 KB Created: 2021-01-10 09:14:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c6336bf3f6622e3ef0a69282a4d27f15 SHA-1: aed2e2ef15c2a3e98c9351e1407004b8ad5dfd29 SHA-256: c3289ebfe732fc7e55e634cb394051ca5a72c8949629266eaba9201a357020d2
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting services, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?utm_term=jharkhandi+khortha+song+video PDF link annotation
    • https://site-1237964.mozfiles.com/files/1237964/lafiwifijiladi.pdfIn PDF document text
    • https://site-1175421.mozfiles.com/files/1175421/disney_movie_quotes_quiz_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/disidudi/jsiiJZj/95440111046.pdfIn PDF document text
    • https://site-1210823.mozfiles.com/files/1210823/91659246355.pdfIn PDF document text
    • https://site-1217578.mozfiles.com/files/1217578/saneruzubezataji.pdfIn PDF document text
    • https://site-1178961.mozfiles.com/files/1178961/27654012743.pdfIn PDF document text
    • https://site-1171714.mozfiles.com/files/1171714/14012466014.pdfIn PDF document text
    • https://site-1174611.mozfiles.com/files/1174611/asteroid_getting_close_to_earth.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/fotojipifuzitul/59629502173.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/gaduradibazet.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_off0000df55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF55 5168 bytes
SHA-256: 7da8986da8fe3bad4a457a11210aadab7893ae0a0bfe511a8026457fb0ba0907
font_01_sfnt_off0000f0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E6 11348 bytes
SHA-256: 6e3b9145da4cd0538451d3e60f6b43439e37748b0d62b8ecbfda12c4c740e5b1

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