Malicious PDF — malware analysis report

Static analysis result for SHA-256 32701ef7f1695940…

MALICIOUS

PDF

75.4 KB Created: 2021-09-01 01:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 361d219c2a1e82f6d4f5d62fdef885be SHA-1: a5ae4fcde1a3b20721cdaf20055e22810bb222dc SHA-256: 32701ef7f1695940105301e6be6119adf93af109e5c038599107c7f6b471a6e7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code or redirecting users. The presence of multiple links pointing to compromised WordPress sites and other domains suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://hansenlight.com/UploadFile/files/renerejuwudasitajagobe.pdf In PDF document text
    • https://privatecambodiatour.com/userfiles/file/29001780613.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/33c74b4dbfdfa94bbb55855414587a2b/zikojasabivovajibemilis.pdfIn PDF document text
    • https://chachachat.info/js/ckfinder/userfiles/files/tevetuzoga.pdfIn PDF document text
    • http://batiment-tunisie.com/userfiles/file/92001423833.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/417f04c60d268ff8b8ff028ca57a522c/wibafexamaputesewegikevu.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/opv3omlj5ih7v7kdn351ggghi1/mememuribaruvigebevazo.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084b1490f549---58973684478.pdfIn PDF document text
    • http://lamexmarket.com/uploads/files/repuruniruwadebu.pdfIn PDF document text
    • http://fairbank-ia.org/admin/ckfinder/userfiles/files/tudinisiparutoxisarulilo.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb766b6728---ziwetisamefenivutuxavidun.pdfIn PDF document text
    • http://roland-toys.eu/userfiles/file/62596208254.pdfIn PDF document text
    • https://behagi.eus/files/galeria/files/59883418632.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20210720_34A68DFC23C5BC94.pdfIn PDF document text
    • http://www.centralperdana.com/file/bufelepexazuvuwisi.pdfIn PDF document text
    • http://aldobini.it/userfiles/files/46387794725.pdfIn PDF document text
    • http://capital96.com/userfiles/file/vevefifofajaroteredimem.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb8b77a2ec---golagewubuxopipewofib.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b92b79e5e49---34907938555.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/vetusowaboromipejufo.pdfIn PDF document text
    • https://ienter.bg/files/1077283836.pdfIn PDF document text
    • https://dunaweb.co/bg_image/files/wupurezedabotaj.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16083e8136d660---15087465422.pdfIn PDF document text
    • http://greenbiotech.vn/uploads/userfiles/file/budam.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=largest+of+the+paranasal+sinusesPDF 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_off0000c6ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AD 15672 bytes
SHA-256: 12117fd19181d283e4ed23f750f9a75142467673b84606b93d6cc263189e6a21
font_01_sfnt_off0000ee90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE90 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000106a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A7 10692 bytes
SHA-256: e00e0898dacb59b2b155041a004297abbe5e5c2cb9f643d18d0970bf96c49bf7