Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09840c7b30b21d8…

MALICIOUS

PDF

82.1 KB Created: 2021-03-28 19:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 499afbeaca44d872cdd7bc9ed845bd32 SHA-1: 80fe17bb5bf4af4f0693cb4fbde1b36837ca1967 SHA-256: c09840c7b30b21d8620906db81c216da0c75af48318edaff274c531a1934d226
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malware distribution attempt. The presence of external URIs and the overall structure indicate it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://soxebez.ru/123?utm_term=beautiful+flowers+dp PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4499300/normal_602205d94803f.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/Vxz6HYi/free_wallpapers_for_desktop.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/yRmhbji/funny_homeschool_memes_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476596/normal_5ffce4e954827.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383800/normal_5ff75ea04cc7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406169/normal_5fd31c5174a88.pdfIn PDF document text
    • https://cdn.sqhk.co/lalamiteliw/0sjes00/26119218415.pdfIn PDF document text
    • https://cdn.sqhk.co/muruwake/hGhghfZ/satojorimobojugemafa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368496/normal_5fcce1e9437f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425933/normal_601a0de25339d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409614/normal_6009b3a134af9.pdfIn PDF document text
    • http://gebovoxitim.22web.org/panasonic_rice_cooker_inner_pot_material.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388617/normal_6026567ae63dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cd8fad78-6a19-43c6-878c-830d169ee42d.filesusr.com/ugd/ff0d91_7c0073c98e91451bb57d8053ba847aeb.pdf?index=trueIn PDF document text
    • http://tepaduvofevog.rf.gd/ascribe_greatness_chords.pdfIn PDF document text
    • http://mowixir.epizy.com/4to_convenio_de_ginebra.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/tencent_emulator_latest_version.pdfIn PDF document text
    • https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_5ae213fa032545568e87991d1b4a76b3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/zikubekupuraxevakivowox.pdfIn PDF document text
    • https://43fe4710-460a-4ad3-90dc-2dd795c51528.filesusr.com/ugd/a32c20_1e3250214eae4e929d74538d04f67e5d.pdf?index=trueIn PDF document text
    • http://farilofisimoru.rf.gd/wagod.pdfIn PDF document text
    • http://watafewajur.rf.gd/bihar_agriculture_road_map_2017-_22.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/91072844070.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10252 5176 bytes
SHA-256: e45fad66f2779e5f77f6fc7d0b31b3c13226d2f7eeb3c12486f3942c9f72f964
font_01_sfnt_off00011414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11414 11588 bytes
SHA-256: e5bd89e9f74fd544db5fe9c3fb353b5e2e5c1b876c337b9946b00dd4c7323f26

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