Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b0c6bac01e7cf4…

MALICIOUS

PDF

257.4 KB Created: 2021-06-25 21:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 774532219981da2418dcd13cfb51ceb9 SHA-1: d7cf4f4db3eaa5f70ade38e85e09e3fa9e13b849 SHA-256: 85b0c6bac01e7cf4155c0c887ba0dc698358da69419911382e9ddc7f1155c9c6
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan payload. Heuristics identified it as a link farm, using compromised CMS uploads and SEO redirectors to lure users to potentially malicious sites. The embedded URLs suggest a phishing attempt disguised as a free download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://aydinservis.com/ckfinder/userfiles/files/12820357580.pdf In PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/mjtiehsh7suq030iki54g6b0dc/mukizusodu.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/cfde299e624667e70cd0eea1866e40ae/xuxivovizikozapuf.pdfIn PDF document text
    • https://chaplains-camps.org/upload_picture/file/42517042518.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcf6d2dc1e2---pevakugesalumizepovexijo.pdfIn PDF document text
    • http://yer-krasnodar.ru/ckfinder/userfiles/files/65419022184.pdfIn PDF document text
    • http://osheamaloneynylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/86252424610.pdfIn PDF document text
    • http://jordanfamilyreunions.com/clients/5/51/51534e3e38036466a76ca8a024fd4923/File/35714568183.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a46175b5cdf---wimedalufenesesebibo.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f6e6ca91b---19709416370.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a364f471733---84222471105.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a319ed24376---57770876544.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aced4dfea6---32366228679.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2df2594d0---8144876609.pdfIn PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/19902079123.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16085b6dd74a78---64430717840.pdfIn PDF document text
    • https://espiber.cl/images/uploadedimages/file/suduvotinazezatupo.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fdeslprj7ttmqpbgvrl57to9c7/16541892157.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c11e098abd0---zisuwudexes.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe9a74aea0---julubizeninigapeduvemagi.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/318dcae4443848c7bafae5f2c0a2b19e/xegewu.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160aec675682f0---73105597594.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a4fcf89f37b---busovogolapilofasinoduwi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=live+for+today+in+latinPDF link annotation
    • https://mediaget.com/userfiles/files/11523975856.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37A30 17212 bytes
SHA-256: f7d6edc9e8a9d20606a45072b23abaa8e02d3492bc505ab9260f26a1e95e90ec
font_01_sfnt_off000393b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x393B0 10316 bytes
SHA-256: 02730b3eee99f9132164a1b33cc46c70e17319afdabf011c776872b371f52f2d
font_02_sfnt_off0003ab13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AB13 20160 bytes
SHA-256: 136a38b9985f2e6d8fd921c02e0820f0430fbc8e99dbae6ac906eb35cd821de2
font_03_sfnt_off0003df08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DF08 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1