Malicious PDF — malware analysis report

Static analysis result for SHA-256 300509159efb704e…

MALICIOUS

PDF

82.7 KB Created: 2021-08-11 05:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: 88acc7e871d22666b8da72ba594524a2 SHA-1: 52f650bd18a5236e573d679ab5b0488762ab71f6 SHA-256: 300509159efb704e269f690418641ac8a33ac122921469a4f6bb09b6bdfa08fa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm for malicious purposes. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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://inwebjor.ru/uplcv?utm_term=sequence+of+events+worksheet+5th+grade PDF link annotation
    • http://studiolegalezullo.eu/userfiles/files/wowiworo.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a85c7d94683---rowatupawafejolemizubatam.pdfIn PDF document text
    • http://cohensevents.com/clients/74638/File/43987730981.pdfIn PDF document text
    • http://biondiairsystem.it/userfiles/files/15878653930.pdfIn PDF document text
    • http://domplus.su/userfiles/files/zokibami.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/35690412362.pdfIn PDF document text
    • http://hyundaiokla.com/uploads/files/9213554119.pdfIn PDF document text
    • https://habibitoursegypt.com/ckfinder/userfiles/files/59853000671.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/54d981d5c39ccec9ebeb19df40f311e3/91157249194.pdfIn PDF document text
    • http://lisaarkinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/50536077240.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc4155a19f---24720508886.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b3af8aeae7c---bupenalexarafasi.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/62ec5dd12411f92680ebb6f40bfac523/bewetomewilatobekani.pdfIn PDF document text
    • https://27061010.com/uploads//files/202108040251222513.pdfIn PDF document text
    • http://turhantur.com/turhantur/files/67739514322.pdfIn PDF document text
    • http://petersonspann.com/clients/3/32/32c4b2f41fa698b5b938e848169c8dcb/File/figomuwotun.pdfIn PDF document text
    • https://partnyor.az/userfiles/file/gugegomowop.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098e79be6b21---48286577551.pdfIn PDF document text
    • http://www.css-jp.com/upfile/files/2021/07/07/jawezekuxunuzomamera.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b77133d4ca5---lonad.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/63636598286.pdfIn PDF document text
    • http://mazurubezpieczenia.pl/zdjecia/fck/file/xoxapisimekebesar.pdfIn PDF document text
    • http://trunglam.vn/uploads/userfiles/file/27462714918.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d13e674353---bivuri.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/f8f6eefnbinkq261jd2vnbhjul/sexitaxewodupebonovoz.pdfIn PDF document text
    • http://drprdesaihospital.com/uploads/19153141479.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/28750a04af6cfebb4efdf8ee6a2e60f4/xitowuvopoza.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_off0000de71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE71 16512 bytes
SHA-256: 459133bab830ad5f6da13d1724c93e98688103c48bcca0ad9eb10279854e1911
font_01_sfnt_off00010908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10908 11316 bytes
SHA-256: b5eaf542dc7c74b644167b9b5858205a1d6ab5498e9784d93e8bada72a65623e
font_02_sfnt_off0001233f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1233F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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