Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0e344bf198268c…

MALICIOUS

PDF

91.7 KB Created: 2021-06-30 01:36:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 211ff7170b42b43f5170932adabbd0c8 SHA-1: 893f4124e6e03532c4f0bc58f1e8832bc2cd6916 SHA-256: cc0e344bf198268c2c81ac2cea2adc493e19d2e6dbd10c655bc371e0bcec5dc3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and link farms hosted on compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • 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://cructi.ru/uplcv?utm_term=with+great+powers+come+great+responsibility PDF link annotation
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/93a541b1f3f22e8e8a8730bc03eae0a8/jezezexerisigezove.pdfIn PDF document text
    • http://dailygiasi.com/uploads/userfiles/file/faxububonumuwimana.pdfIn PDF document text
    • https://khangle.vn/uploads/images/files/32640954783.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b141fad42f5---sexigisodivowofuwutu.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608de10bf1704---wugijidasukibafovisumuk.pdfIn PDF document text
    • http://optykglowacki.pl/obrazki/files/felevufexigikamakokun.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160d7bc393c031---kitonarefidofitu.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/b02b4e9170e2fbaa793bce523ce84089/70635439979.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607beda297324---sugaxuteritimerinotuzepe.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/33138745353.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/aflf56fio79pb30q8jq3f70pap/reberez.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021050101501638.pdfIn PDF document text
    • http://myconnect-thailand.com/image/upload/File/95081403101.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b9e20c51267---todow.pdfIn PDF document text
    • https://wolfgang-photography.com/userfiles/files/49937489171.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/82056345185.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/luph0m9cdo529appo3kaqsn77f/wivifumi.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccdbdddfb2---kisowirorupidisivaporu.pdfIn PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/5m9thpjvrkrqca84auqm9unon0/78294995257.pdfIn PDF document text
    • https://atphp.ch/userfiles/file/60004703867.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/a5d7413ec379b6e11baa9e4ad5088be4/razuwovoxabavalox.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adee72a37aa---4569889398.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/9204962743.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/dc312ikop75sndgn0tf6od994l/natitipolegexemi.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_off0000ff94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF94 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000117a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A6 17716 bytes
SHA-256: 740b59b5e3054548aab05b7963045daeb9169e5a3b562f1cfd0e3558c06b8f01
font_02_sfnt_off000145f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145F4 11156 bytes
SHA-256: 50568e45807f5cbd00f53ee75d2ddd5b3625e42902a551ffc716e10c69045b6c

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