Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f379d61cdf6f21…

MALICIOUS

PDF

95.0 KB Created: 2021-06-30 09:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7d5d0fb63264281f2693d9ec79acdf67 SHA-1: e7fb419839fe401e84f0a5fa0ae4ef69757adc14 SHA-256: 64f379d61cdf6f2142e8aa86a4f22b9f0eea67ed99828bf9ffe7c2cb42e5fe63
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm for malicious purposes. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • 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://garglob.ru/uplcv?utm_term=sexy+text+to+your+husband PDF link annotation
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a058f45de871f23dbba9c1d96e73829a/37605515071.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/a6c18f4194fa27c3a8de88acf1db4099/piwezakaketifipe.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c46d1abf978---71652978278.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/tumawotovanuzupekofarobik.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb4ebdf891---vepurejigekazigi.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/74029ea99b1c63750796bd290fbd8461/mefizojo.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/325102d908d026c5eb19ec42202e0bfe/51198179818.pdfIn PDF document text
    • https://contactfm.be/userfiles/files/82700163695.pdfIn PDF document text
    • http://fd-health.com/upload/ckeditor/files/35406913459.pdfIn PDF document text
    • https://egyiksem.hu/uploads/file/89646950261.pdfIn PDF document text
    • http://99hospitalitygroup.com/ckfinder/userfiles/files/97792204236.pdfIn PDF document text
    • http://sllight.ru/design/img/upload/file/3826822964.pdfIn PDF document text
    • http://bidhichand.org/sahodyatarntaran/userfiles/file/sudoforezuzusakujut.pdfIn PDF document text
    • http://raffaelecavazzoni.com/userfiles/files/42446430233.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/5980gj6gl9f576a6nm09i36kf4/vekanubaxu.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd11b4f2d3---4418189449.pdfPDF link annotation
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/cuspuhbs22e3o5vm12cs2r1s75/mawasabutusukasesedenamok.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/xopib.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c85aad5f975---tilajepivip.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/35041138093.pdfIn PDF document text
    • http://internationalnetworksolutions.net/files/38573253418.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b86c72e17de---90587707624.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae4f1f9493e---59787013108.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_off0000f7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F1 16312 bytes
SHA-256: 7d15b2d6d265aaca51dda18faee70a1b8fa9d95ed54cb111fb0895789092f9ae
font_01_sfnt_off00010dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DFD 10740 bytes
SHA-256: e8ef175536e3665ff533ab0296f1b80c90335ee282e01c51f0872a0c6d3e8185
font_02_sfnt_off000126aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AA 18280 bytes
SHA-256: b3dc6e219765df34903404304709df59d8ad8f03da244118dad3dbdf472a5061
font_03_sfnt_off0001566c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1566C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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