Malicious PDF — malware analysis report

Static analysis result for SHA-256 70961c454649b6d4…

MALICIOUS

PDF

86.2 KB Created: 2021-06-30 05:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: da3a541b92bcb15bc2619642f91eba8e SHA-1: 2beb6603c0fa2e3d7c823dfee91aa9744d5c3c4a SHA-256: 70961c454649b6d4253cd993d46f437056d28662c312620648e3ae08809bcc11
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many of which point to compromised WordPress sites or disposable hosting, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 http://amuseonline.com/absite/userfiles/file/fidunagoravixavoxapara.pdf In PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16084a295d914e---26581610483.pdfIn PDF document text
    • http://prof-cosmetics.com/upload/files/97667035076.pdfIn PDF document text
    • http://faw-asia.com/image/upload/files/xizasubevodate.pdfIn PDF document text
    • http://arablift.net/userfiles/file/mukapapomebujenu.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a40a3d240d3---torabaxoloboxobina.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/7df6c98a7edf45d1bea8c03d76227d77/66943794504.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/a9686c27cd852d4844ca98e7c393c7a6/faboletenomozoje.pdfIn PDF document text
    • http://diclenakliyat.com/userfiles/file/68105749916.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609a60a9dfe58---nizopusexufuzibejupak.pdfIn PDF document text
    • http://bjsprt.com/uploadfile/file///2021062716014146.pdfIn PDF document text
    • http://kripasec.com/userfiles/file/zopiverubi.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/optrtuamr1l54k26o279upm557/wubosiliwijezupezoximef.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/45748534126.pdfIn PDF document text
    • https://arket.io/wp-content/plugins/super-forms/uploads/php/files/7ip2debcrjgsvud1nitc7io7v6/welilivorudoz.pdfIn PDF document text
    • http://maduraicaterers.com/app/webroot/js/ckfinder/userfiles/files/82235829515.pdfIn PDF document text
    • http://pgnsualumni.com/clients/872691/File/14421018600.pdfIn PDF document text
    • http://jhferry.com/data/fckeditor/file///31620094060.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/467badng3gopihgtocne92d164/54916738301.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0bd5e4775---simubebikaluwumopu.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/60a3f6e122acb70be051f2cf60a46bbb/rirazan.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f7181f898---78380043952.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/jimumosu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=3+types+of+gated+channelsPDF 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_off0000ed03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED03 10896 bytes
SHA-256: bb2ef26135d23524cd8af5d99b59f6ec20a8b6166e975262e191fcbed81126ee
font_01_sfnt_off00010606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10606 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E18 17452 bytes
SHA-256: 1c89bee6d9fe0ce70080ea85858e0ee8a139b1d4c7da528d7fcccc5d3055cd62