Malicious PDF — malware analysis report

Static analysis result for SHA-256 a947513beade77bc…

MALICIOUS

PDF

81.5 KB Created: 2021-09-03 06:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 603a6aae221a6e05a7d7f92262e5611d SHA-1: a58f79d7f5bcf084fcb9f6a2c0fd62d6d7e2bcf1 SHA-256: a947513beade77bce0331adc1854b710a9bd14432e91841e098f9993e5d21ea8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggest it functions as a link farm. These links are likely intended to lead users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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.
  • 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://philabc.ru/uplcv?utm_term=contoh+tesis+kuantitatif+pendidikan+pdf PDF link annotation
    • https://ensegun2.com/ckfinder/userfiles/files/nikimukexagiro.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac79cd97aa8---35175675706.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/1a56e2862cf568b9b2fe16e7d0f78f32/tisusajowodafabapofoxapul.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/4fadf4d1c96749cc75cb3f4591b872a8/15334922916.pdfIn PDF document text
    • http://angeladaniel.eu/uploads/files/wezovixivomobibube.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/6744626881.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ebf0c8a9f---vuzegeramobod.pdfIn PDF document text
    • http://coinmarketsuite.com/ckfinder/userfiles/files/84130898700.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607033fb73fef---19024161695.pdfIn PDF document text
    • http://goraku-sangyo.com/userfiles/file/63639482238.pdfIn PDF document text
    • http://twfindia.in/userfiles/files/rawumoxowajatased.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/d1p1bokcpq1b3hrm3oqkh04aj6/bomererofugekisilad.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611960f0e082f---19249532.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/h4rndjln2ntpjfsigt0lhtv280/pekitefabebafunovinupojin.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611ea37cb4a60---28583666833.pdfIn PDF document text
    • http://go-pxl.com/uploads/files/53201961169.pdfIn PDF document text
    • http://arredamentoambienti.it/img/file/52604564070.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf97e608fa---wevariladetivizi.pdfIn PDF document text
    • http://kolaykanal.com/userfiles/files/wejopuz.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210507041742.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b708f3c3a9---xisuzowugab.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608154286083b---69299552823.pdfIn PDF document text
    • http://fjzy18.com/image/uload/files/58753543335.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869ba81584a---zumijugawubed.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://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_off0000dc96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC96 16684 bytes
SHA-256: 2b974cc435c635f59ca8cd8ef47342f58ce6de2bad616846e0e42c9c2d7e7778
font_01_sfnt_off000107a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A2 10672 bytes
SHA-256: bd461132529a34f976961f7bff16081e08a8852ea6f07b6580d5c943f4d706dd
font_02_sfnt_off00012019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12019 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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