Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddeacbbcf04dfbe…

MALICIOUS

PDF

352.0 KB Created: 2022-01-02 05:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 4af4fbb34db633d8b727a7e16045d940 SHA-1: e029cdd2d2b4ed1957c0cac802b70bae68c9f330 SHA-256: 3ddeacbbcf04dfbe3509295f71bf22378a8be415c1ea3a57a0a20a03815059c9
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including one identified as an SEO redirector for phishing. The ClamAV detection and ML classifier further indicate malicious intent. The document likely aims to trick users into downloading a malicious payload disguised as a legitimate file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6933

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
  • 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.
  • 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://biondiairsystem.it/userfiles/files/2131933280.pdf In PDF document text
    • http://uktohabbarijamalta.com/files/file/43445751197.pdfIn PDF document text
    • http://kbchina.de/upload/zesasapadas.pdfIn PDF document text
    • http://gazetavk.ru/img/file/79540873825.pdfIn PDF document text
    • http://belean.pl/userfiles/file/fipazevidifatevelu.pdfIn PDF document text
    • http://filipdegreef.be/uploads/files/lavoluvutitugarelo.pdfIn PDF document text
    • http://studiorumeo.it/userfiles/files/vonolowikukuwotipo.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202112131852062590.pdfIn PDF document text
    • https://pleasanton.com/wysiwygfiles/file/9522446017.pdfIn PDF document text
    • https://1ar.sa/userfiles/file/11999115729.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/33305591347.pdfIn PDF document text
    • http://rc-modeller.se/images/file///bufoseteti.pdfIn PDF document text
    • https://newtop-eg.com/userfiles/file/lutekevititobanajivozek.pdfIn PDF document text
    • http://rzn-house.ru/upload/file/73468448790.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/vcs95jmccauanq3bgj89oih201/fuveduxuwadepewalaxonos.pdfIn PDF document text
    • https://www.funes.gob.ar/ckfinder/userfiles/files/jakopobajelotiwozifaw.pdfIn PDF document text
    • http://burbank.kopanramen.com/uploads/files/22133642320.pdfIn PDF document text
    • http://cobe-ing.it/userfiles/files/86640953183.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/dpkc1genh7j48q5jcqu0bh82a7/lolujod.pdfIn PDF document text
    • http://www.poliklinika-hb.cz/userfiles/file/64690012276.pdfIn PDF document text
    • http://burningspearmarketplace.com/js/ckfinder/userfiles/files/kujijetivopezaxutikizov.pdfIn PDF document text
    • https://xn--49st2et51duvk.com/upload/files/78762244007.pdfIn PDF document text
    • https://barcelonacentromedico.es/files/galeria/files/xenulazebu.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/57967268981.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1617eb4bd528d7---tarogawokixeritemub.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RC0zOYPQW8A/uplcv?utm_term=d%26+b+credit+rating+reportPDF 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_off0005170a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5170A 18920 bytes
SHA-256: ca282e023112375b8d4ca7cca83132718b57c4676317453d607ca7efa282ef08
font_01_sfnt_off00054848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54848 9076 bytes
SHA-256: f695977626623e59fedb2fbedebd468d0acf89ff6f6ceafeb3cee4351ddee6c8
font_02_sfnt_off00055aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55AED 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336