Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95ee49f01c64f57…

MALICIOUS

PDF

69.4 KB Created: 2021-09-08 06:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9266a62db5664f0feb0bb9337a6de9ae SHA-1: 740eb5ea77cf3b93da07e7b5ba21e5cec52d155c SHA-256: d95ee49f01c64f570f2eda24a784992ce628b275de097219a6d8c1a24516d46e
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://pixomot.ru/uplcv?utm_term=poultry+farm+design+plan+pdf PDF link annotation
    • http://harlit.com/upfiles/file/dekunezeromabun.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610dfe3c9c97d---dabobirufoxobajuzimokata.pdfIn PDF document text
    • http://romengo.com/ckfinder/userfiles/files/90576836344.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/tiwinijokelekututozaxuxow.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/bogopirolukifas.pdfIn PDF document text
    • https://satnamunicipalcorporation.com/admin/ckfinder/userfiles/files/jebir.pdfIn PDF document text
    • https://vansuloi.com/uploads/userfiles/file/8342932540.pdfIn PDF document text
    • http://banquat.com/userfiles/files/14440971138.pdfIn PDF document text
    • http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/teladokipelotokogari.pdfIn PDF document text
    • http://ristoranteyuri2.com/userfiles/file/99128285284.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/43114889087.pdfIn PDF document text
    • http://immopolignano.lu/images/31242693696.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/656aca47882a4d3f4374713f77f9d3cf/gizukirolegugofijonuj.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608d3dba183e5---65253313804.pdfIn PDF document text
    • http://woodbridgeabw.com/uploads/files/56360163776.pdfIn PDF document text
    • http://dietetyka-24.pl/images/files/98497446403.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/15448817015.pdfIn PDF document text
    • https://gotamsui.com/ck_imgs/files/36535119391.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/aef6b9109d8823f9187656255f8b31cb/51885092561.pdfIn PDF document text
    • http://kennedy-jackson.com/clients/f/f7/f78508644b517540cdb1549d93860f53/File/77174811254.pdfIn PDF document text
    • https://j26clean.com/upload/files/furasanixuzawezago.pdfIn PDF document text
    • https://nacituran.com/userfiles/file/78610228859.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/854f46a0bfcaec7a49d26566beb49cdf/29852099172.pdfIn PDF document text
    • http://studiodabo.eu/userfiles/files/427400505.pdfIn PDF document text
    • https://lengthening-sldf.com/userfiles/file/wulilulosafataguwatewo.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/25789461717.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_off0000b3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B6 13968 bytes
SHA-256: 87ce4dd74e274eb5c9835fbc564edd0445e7fd930b62d7612f97baa26e198ffc
font_01_sfnt_off0000d631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD631 11056 bytes
SHA-256: 3dcb6ff196e95462e6009b80a9773b5f33d59265016a31584e98c294e9354636
font_02_sfnt_off0000efcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1