Malicious PDF — malware analysis report

Static analysis result for SHA-256 0337e7e93407b4f7…

MALICIOUS

PDF

89.3 KB Created: 2021-08-01 10:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 6fb489ec1c4beedf986ec82ff17ec27e SHA-1: 5b86429d7b06420ee5e1f969543e6839c813ea17 SHA-256: 0337e7e93407b4f7bcaed9d699cc64ae6805187ac8a189304a079eb6fb0c5bb9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm for malicious redirection. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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 http://crmrealty360degree.in/userfiles/file/pawurujidewotabuwo.pdf In PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/gamawogesadibixanelexidir.pdfIn PDF document text
    • http://ippinnudon.com/uploads/files/88208690302.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/4f31df9a7219546c52074817f310ea85/77410879371.pdfIn PDF document text
    • http://serdceprirody.ru/userfiles/file/roruduwutobupikesu.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/578d4bd7ecfc53fbec10f6e2e2a75874/lemobofiluzaxeru.pdfIn PDF document text
    • https://hrmconsulting.biz/upload/files/16823278530.pdfIn PDF document text
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/74050332893.pdfIn PDF document text
    • https://cape-electronics.com/media/file/pizomagemevowof.pdfIn PDF document text
    • https://giverny-bkk.com/upload/files/rumezijibemezozumaxif.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16086f4b662ecd---tofapimigovegasujinex.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/a1663e644706a36b6c53ab107f357b9e/pizanesupafegegamedozime.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160740f7adcc6c---balanelor.pdfIn PDF document text
    • http://ingatlantv.tv/userfiles/files/33432899520.pdfIn PDF document text
    • http://danchrisjewelry.com/userfiles/file/15150528228.pdfIn PDF document text
    • http://meta-min.com/files/nuxoxapizemenuxepep.pdfIn PDF document text
    • http://noticiascgnews.com.br/ckfinder/userfiles/files/74594193297.pdfIn PDF document text
    • https://laser123.com/geektic/files/69577002263.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/9901838818.pdfIn PDF document text
    • https://torgradio.ru/new/files/file/mijutonif.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/caf0947835a19fa8490392f387080d4d/falofibeliginusasuluj.pdfIn PDF document text
    • https://slezanie.eu/userfiles/file/82908885969.pdfIn PDF document text
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210503023245705302k8lcg0.pdfIn PDF document text
    • http://balone.net/_upload/file///58168343359.pdfIn PDF document text
    • http://angelofthewinds.net/ckfinder/userfiles/files/tusojajivapepukolalugemi.pdfIn PDF document text
    • http://cs-web-design.de/ablage/userfiles/files/vogiw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=a+cuantos+kilos+equivale+un+metro+cubico+de+basuraPDF 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_off0000f42b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C42 11056 bytes
SHA-256: ba90656ac1c7521b399f6738bd8a79f1829184a0f048aeed27fb14722bed67bc
font_02_sfnt_off000125d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125D2 18540 bytes
SHA-256: bb0096013edfe70d37166063749e630d82cb8316e6711bca170ba1902488c33d