Malicious PDF — malware analysis report

Static analysis result for SHA-256 78c11fee374278dd…

MALICIOUS

PDF

74.5 KB Created: 2021-03-08 20:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9b26b93eacff286bc8bedb066db839ae SHA-1: a82915b5c4db53f0e14229f8cc46e6ff37426abd SHA-256: 78c11fee374278dd2b3ae3053b7469e52c520a364a36a90e56db6bec35a9ad38
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to distribute traffic. The document body, though heavily obfuscated, contains text related to movie streaming, suggesting a lure to trick users into clicking these links. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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 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.
  • 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://kuzutuzo.ru/strik?utm_term=watch+the+boy+in+the+striped+pajamas+full+movie+free PDF link annotation
    • https://cdn.sqhk.co/dijogiper/cSVsTgi/sanibonixot.pdfIn PDF document text
    • http://vitedotom.iblogger.org/what_else_can_you_do_with_a_breakfast_nook.pdfIn PDF document text
    • http://musumavugas.iblogger.org/gedejegari.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuniruf/Yhhhe6v/79169865324.pdfIn PDF document text
    • https://cdn.sqhk.co/wodabumamuv/hdOhii5/57579925216.pdfIn PDF document text
    • https://widajuzuno.weebly.com/uploads/1/3/1/6/131637349/lekasexajuju.pdfIn PDF document text
    • https://vegekevovixo.weebly.com/uploads/1/3/1/4/131437475/raxinegapoma.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465548/normal_5fc80cca88964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408172/normal_603545d6b38a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411944/normal_6007dc472ece0.pdfIn PDF document text
    • https://repawuwo.weebly.com/uploads/1/3/5/3/135313919/1e796.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482618/normal_5fcaf43c42f11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471706/normal_5fdf2bbd5fd12.pdfIn PDF document text
    • https://cdn.sqhk.co/giwibilawa/jiigKji/archery_master_3d_mod_apk_hack.pdfIn PDF document text
    • https://mogopefisumiba.weebly.com/uploads/1/3/5/2/135295831/bupujonimajolokaxot.pdfIn PDF document text
    • http://xnx.tv/busty-amateur-pawg-striptease-on-webcam.htmlBustyIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilaxeputeso.epizy.com/pasomadazaxek.pdfIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_15df71a0e6ad4dc59a85464f2dfc68f3.pdf?index=trueIn PDF document text
    • https://4a7d9d2b-1d67-446c-8d6d-bdd3043d1f60.filesusr.com/ugd/c3d078_c2f04eaf6a4f445da7d497fc53fd6f2f.pdf?index=trueIn 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_off0000e46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46E 5788 bytes
SHA-256: 2a94e8af9e9d9592059deec6c64f96d4182ff20ad608caf554dc8f1acfe1c35b
font_01_sfnt_off0000f80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80B 10656 bytes
SHA-256: 03e39f6deb99cfc2daeb336ed05d1ab55c668708b5cc3171fe8e6e2a27321e92

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