Malicious PDF — malware analysis report

Static analysis result for SHA-256 2259a1c2ca7524d7…

MALICIOUS

PDF

89.8 KB Created: 2021-07-04 02:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 38a4692974434476041bd770d8609ff0 SHA-1: 17823310a053ffd0280bf77a3228fda382d2d90c SHA-256: 2259a1c2ca7524d7b0be5c4ede733fd24acc64d915b19c418d045f38118c8e6b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple URLs pointing to compromised websites, indicating an attempt to redirect the user to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely used for phishing or distributing further malware. The presence of a link farm on disposable hosting further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/s68n9ulpq3734r0l80ccqqed0n/24210264446.pdf In PDF document text
    • http://tyextractor.com/d/files/kagopajemud.pdfIn PDF document text
    • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/57690689042.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/sl30k3nbs7fingecprc43lk4s2/melukawilofuzedifafabo.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/8co1g8rnjavufqp3mthho84vbm/pevebane.pdfIn PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed4f77cc63---pajabetepebujo.pdfIn PDF document text
    • https://szaniterplaza.hu/ckfinder/userfiles/files/legasebelefozufaleti.pdfIn PDF document text
    • http://orderleesushi.com/uploads/files/lemubuzelupaku.pdfIn PDF document text
    • https://lawyerupsmart.com/tempimg/file/83260950987.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bdeb1c26ea3---xijoxafobefolosimutarog.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/h6lj6oc5oj4jeap491oge5lk26/xikekepixasojon.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160a607057490d---14390608082.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/67360704938.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5e3b89265---19759705126.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/pamuga.pdfIn PDF document text
    • http://classtool.info/upload/files/5190681928.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/2054h14i0ll7uo06dhsgkiejh6/fiwotesubesijag.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608924df77673---1680031136.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/ribedudonegemuzusoradopo.pdfIn PDF document text
    • http://ashioke.com/images/library/File/wezavafezax.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16070c801cbdce---semelememetuwiwaxoxowazi.pdfIn PDF document text
    • http://debandhelder.nl/ckfinder/userfiles/files/juxuto.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7657e9a57---92975096283.pdfIn PDF document text
    • http://tgtech-auto.com/userfiles/file/kemizabifuwexa.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16095733847a94---17747996340.pdfIn PDF document text
    • http://jar-ted.pl/file/1508795670.pdfIn PDF document text
    • http://classiccar-jp.com/js/upload/files/72195969397.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=water+lily+is+symbol+ofPDF 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_off0000ffd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD9 16300 bytes
SHA-256: db466d6c035072ccf8c2946536ba71af1a170667b6740cfb940697bb4589428b
font_01_sfnt_off000129f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14208 10516 bytes
SHA-256: 920aa43a501838066214ecf9ae8b14ffd93fe006b2ff236cc10aa8dc0651fc97