Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ddc8e43736ca39c…

MALICIOUS

PDF

79.3 KB Created: 2021-01-15 05:04:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0a3b5a57bbd365a9a8e3c3a5d054ea70 SHA-1: 66113d7bdf2d6254a42a14f13309890af0289298 SHA-256: 2ddc8e43736ca39cf778a600640768ef9489e3a96a2f270b28d3fee89d221b23
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains numerous external URIs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated, but the presence of embedded URLs and the overall structure strongly indicate malicious intent, likely to redirect users to malicious sites.

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
  • 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://traffnew.ru/aws?utm_term=sound+card+oscilloscope PDF link annotation
    • https://site-1178403.mozfiles.com/files/1178403/cash_app_phone_verification.pdfIn PDF document text
    • https://dudiretoziruk.weebly.com/uploads/1/3/0/7/130739928/d018c0.pdfIn PDF document text
    • https://site-1176985.mozfiles.com/files/1176985/6755421493.pdfIn PDF document text
    • https://site-1174586.mozfiles.com/files/1174586/37341167278.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371790/normal_5fc6c79ac7608.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496372/normal_5fd759b67ec3f.pdfIn PDF document text
    • https://site-1175001.mozfiles.com/files/1175001/ticketmaster_accept_tickets_not_working.pdfIn PDF document text
    • https://site-1168429.mozfiles.com/files/1168429/xuvozoga.pdfIn PDF document text
    • https://lajawenofuki.weebly.com/uploads/1/3/4/5/134501859/vimulawusilutujiva.pdfIn PDF document text
    • https://site-1166084.mozfiles.com/files/1166084/alfabeto_griego_koine.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/niwotipugonuvoz/nonconformity_in_dead_poets_society.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/me_before_you_movie_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/clash_of_clans_hack_direct_apk.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_off0000f78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78E 5168 bytes
SHA-256: 1447612ac8d47c8ebcb39faed9ab32e37158d82ac45744bb512d511202d56c5d
font_01_sfnt_off0001092e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092E 11544 bytes
SHA-256: 23f070048eabf58ee803fe55e8efb22e7b760174b94d9754d5d39c6ba8e34079

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