Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3163bd928a65f7…

MALICIOUS

PDF

227.0 KB Created: 2022-02-05 13:57:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: 48e6915f116284fa926d7c439293982c SHA-1: 1a6a6234bdca65bbef6b0d9cada21596eda55cf0 SHA-256: 0d3163bd928a65f746e1cef3981284134d7949564069519d0df74e29227dfe1c
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded JavaScript and external URIs, specifically a redirector linked to an image lure, suggests it's designed for phishing or to download further malicious content. The primary lure appears to be related to free downloads, as indicated by the heuristic 'Image lure linking to an SEO redirector (free-download phishing)'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8279

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.
  • 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://mifuj.co.za/XSRYdR1H?utm_term=twitter+logo+transparent+png PDF link annotation
    • https://madame-tina.com/ckfinder/userfiles/files/bakutofusew.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/161e8606df037e---tataloxojaranoxo.pdfIn PDF document text
    • http://dental-forum.ru/userfiles/file/dagubibaritagumawuv.pdfIn PDF document text
    • http://netpost.vn/upload/userfiles/files/remuzavegoweropekaligiv.pdfIn PDF document text
    • https://trubaopt.ru/content/file/44325012517.pdfIn PDF document text
    • http://ecandrychow.pl/Image/files/5883049371.pdfIn PDF document text
    • http://sakem.org/userfiles/files/kitijoxanig.pdfIn PDF document text
    • https://smilaxlabs.com/userfiles/files/54765112532.pdfIn PDF document text
    • https://zooiguana.pl/app/webroot/media/files/puzugotusakavofoma.pdfIn PDF document text
    • https://petala.gr/userfiles/file/rorotogofitan.pdfIn PDF document text
    • http://asv-solnice.cz/_files/file/guvufob.pdfIn PDF document text
    • http://www.kermaz.fr/js/kcfinder/upload/files/98271561975.pdfIn PDF document text
    • http://seto.cz/uploads/lifurezaro.pdfIn PDF document text
    • https://dom4m.lv/userfiles/files/95270071815.pdfIn PDF document text
    • https://hashtag.school/userfiles/file/pubigu.pdfIn PDF document text
    • http://kickstartfintech.com/ckeditor/kcfinder/upload/files/20988069653.pdfIn PDF document text
    • https://kolkatanagariksammelan.org/ckfinder/userfiles/files/nixusagugezedirisejuru.pdfIn PDF document text
    • https://dp-engineers.com/admin/userfiles/file/nibejexemazerosowoj.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4e725d158---28425895464.pdfIn PDF document text
    • http://oprandi.it/userfiles/files/kelat.pdfIn PDF document text
    • http://ristoranteyuri2.com/userfiles/file/34924313647.pdfIn PDF document text
    • http://fjzy18.com/image/uload/files/28346318983.pdfIn PDF document text
    • http://lafenicealcamo.it/userfiles/files/luriwofosoxasinetikejamig.pdfIn PDF document text
    • https://www.trungtammaychieu.com/ad-min/js/libs/kcfinder/upload/files/kalagereparevesuwojex.pdfIn PDF document text
    • http://machinesupplier.cn/data/product/file/20211123_213741_481.pdfIn PDF document text
    • https://bdayal.com/userfiles/file/36042398068.pdfIn PDF document text
    • http://sevvalturizm.com/rsm/files/98927081432.pdfIn PDF document text
    • http://remproekt-m.ru/admin/ckfinder/userfiles/files/wovutovorobix.pdfIn PDF document text
    • http://mezon.jp/userfiles/file/rawudepale.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/10cb89460fa0d0447308ca5b03710d91/xadufavurisajofo.pdfIn PDF document text
    • https://saigonservices.vn/images/uploads/files/polegiz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000325b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325B0 10476 bytes
SHA-256: 162f2c2a63c8897a4b7d00956ea2b78d2ec651b73283e5d5f313c72e95b414cc
font_01_sfnt_off00033dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33DAD 15648 bytes
SHA-256: d9a442f0431c62ec224a2b6e34d170fe139fd6360669323a40857602ed009970
font_02_sfnt_off000365e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x365E9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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