Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f980250bb61f1bb…

MALICIOUS

PDF

86.0 KB Created: 2021-07-19 00:30:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7a60293a270eca4e3b89f437f3c14e67 SHA-1: ff01a881a7a8f872a6ecc9f6191241654002ed2d SHA-256: 0f980250bb61f1bbe78d49f1f5e53329669e8853e8d08d087e078e815471da80
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous embedded URLs pointing to various websites, some of which are hosted on compromised CMS platforms. The presence of these links suggests an attempt to lure users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://studiorumeo.it/userfiles/files/likekurodi.pdf In PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/kef483m230hv6srkm099i6v9n2/rapopeze.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/45esnmg1oavqv5mu61hpqc2696/rifesuratuzupegakudilevax.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d174d8e21c---vutudewujojuvowik.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/jevuwep.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2bacca69f---rasut.pdfIn PDF document text
    • https://www.bussmann-tiefbau.de/ckfinder/userfiles/files/41555199844.pdfIn PDF document text
    • http://www.pics4us.de/userfiles/file/5015943888.pdfIn PDF document text
    • http://ngocvietbungalow.com/upload/files/22650061568.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/81402904594.pdfIn PDF document text
    • http://flexa.cz/docs/file/48682566596.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609abf34f0f60---wepudajudodudufikeliwom.pdfIn PDF document text
    • http://chronocertif.com/userfiles/file/86024710650.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/zesetemoka.pdfIn PDF document text
    • http://www.gabrielamaciel.net/images/content/file/mugavulerixifenuvuvagaw.pdfIn PDF document text
    • http://alacarte-grafik.de/userfiles/file/61780366052.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/mavixuxalof.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/2b39849118dc9b07a6a3c955e5ec76ad/74320224166.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/93426941446.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160af5ef637c3c---pezijoxezadisivarujaza.pdfIn PDF document text
    • https://m-astar.com/UserFiles/files/97859940787.pdfIn PDF document text
    • https://kurek-rowery.pl/user_pict/file/5971987191.pdfIn PDF document text
    • http://talleresjpg.es/img/file/54582519978.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160714d6d16a74---tizetas.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/ca28e424e730852789ea2fee239fa257/xifobunupugeragid.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/ia838d9r033d6m8bmv3k8p8069/51407853255.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608b25f61bd1f---47936215167.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=our+world+then+and+now+1+answersPDF 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_off0000eb1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001032d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032D 17984 bytes
SHA-256: 25d67a31d4038a7f7e7094e5886eff27febbee7e34adf9b86f2d3ce1cff71fb9
font_02_sfnt_off00013254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13254 10516 bytes
SHA-256: 6df30bfe96eb72e00fd4c6d1a22900cc9da88d8145a12cfc82bd050b02f3671d

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