Malicious PDF — malware analysis report

Static analysis result for SHA-256 02720c5edadea158…

MALICIOUS

PDF

81.7 KB Created: 2021-09-09 09:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: b80450d2de5b08b2cb02b74a42260213 SHA-1: 377608bfc3d7791d55809fb9631f2a297e480806 SHA-256: 02720c5edadea1581ea2014ddcd236253ca5ca47e5d30579852605b3429fc660
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on suspicious domains and are part of a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's a downloader or redirector for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://abouelhoulgroup.com/userfiles/files/wogimojifebinenafurimoxaj.pdf In PDF document text
    • https://fleschimmo.lu/userfiles/files/xigetifu.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/40079466961.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/161393e6269849---xorowusupi.pdfIn PDF document text
    • https://tatvan.in/userfiles/file/40627676181.pdfIn PDF document text
    • http://yuanda-boiler.com/d/files/1095619947.pdfIn PDF document text
    • https://abisspaandboutique.com/nbloom/fckuploads/file/89742792165.pdfIn PDF document text
    • https://magnettoptan.com/upload/ckfinder/files/43559090784.pdfIn PDF document text
    • https://gyn-koe70.de/obrazky/file/kafagetopatodelig.pdfIn PDF document text
    • https://sportyou.fr/ckfinder/userfiles/files/20022513754.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/rudigan.pdfIn PDF document text
    • https://yapluka-services.fr/userfiles/file/gerakepuwebig.pdfIn PDF document text
    • http://cnhhgj.com/upfiles/userfiles/file/kujimolusirulugamati.pdfIn PDF document text
    • http://stringquartet.biz/web/images/fck/file/7012485797.pdfIn PDF document text
    • http://mindentudor.hu/userfiles/file/wixoboligawizeb.pdfIn PDF document text
    • https://kapefashion.com/files/files/babiwapibamamevekaku.pdfIn PDF document text
    • http://wowbond.com/upload/Fckeditor/file/52320288710.pdfIn PDF document text
    • https://cambodiaangkorhomestay.com/userfiles/file/sotorumaxilukafopifuf.pdfIn PDF document text
    • https://mama-light.net/business_school/uploads/file/33425261742.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e7d328f8f---zodobe.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/76522140001.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/files/pojabejamitiwapok.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/pugamuzesadabu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=babumoshai+bandookbaaz+full+movie+download+720pPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d63e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63E 11456 bytes
SHA-256: 40e4133b248cd2c930f180c583f71c95915f13209e946dce87671322b4c86f20
font_01_sfnt_off0000f116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF116 18368 bytes
SHA-256: 3d46523ef34bcd6d93c5a1b39a8b42a539103dfc1e4aab6a6f6a385c946f72c5
font_02_sfnt_off000120e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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