Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc976888afbfbf41…

MALICIOUS

PDF

80.9 KB Created: 2021-07-25 12:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: c5cddf050ad966063bab11222b8602c6 SHA-1: 57f46c052b21b20953182a41ed9bb9df3afcd77e SHA-256: fc976888afbfbf412d404a839301643cf5a0416c3ab3b7126175516e99acaeec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was detected as a phishing trojan by ClamAV and an ML classifier. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress upload directories and disposable domains. These links are likely intended to lead users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6185

Heuristics 5

  • 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
  • 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://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/4ce495715dbde48eb774888824993b51/jufabevuvamutesajuwajo.pdf In PDF document text
    • http://premium-t.info/files/files/disixejajarivovekowukede.pdfIn PDF document text
    • http://1parareunion-club.com/clients/4/48/482fc251494624b09083a87f212a12d7/File/19129711727.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/efb17f07d6557b51477fb63fe283abf8/noxitozivaxitu.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/537dc1dc9403e63d3f67f6e54ecb3018/sudipupuxofo.pdfIn PDF document text
    • http://bilmatbasim.com/userfiles/file/kifozavazadiw.pdfIn PDF document text
    • http://plnjl.com/userfiles/files/46519200890.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bb023220230---67134290316.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/rumepajidusiv.pdfIn PDF document text
    • http://kbo.pl/ckfinder/userfiles/files/98084779741.pdfIn PDF document text
    • http://jullien38.com/ressource/site-image/files/jagugekigumit.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/34938140805.pdfIn PDF document text
    • https://tradingphrases.net/userfiles/files/zutufodufonefugelutepu.pdfIn PDF document text
    • https://praward.tw/wp-content/plugins/super-forms/uploads/php/files/b7ffb0c467e3b0de8cee9800d6d49feb/mamilive.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/25205676a980b41037d454c5e2732848/likigifipavawivediba.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607670c4be3cb---6632738324.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/jua8sgn7gfm2c1ep1kruc8m1b9/79426682685.pdfIn PDF document text
    • https://feng-shuiworld.com/userfiles/file/14311283825.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160a20d661a926---72127671031.pdfIn PDF document text
    • http://zonwering-nederland.com/ckfinder/userfiles/files/29988306505.pdfIn PDF document text
    • http://www.ferm-matic.fr/upload/file/26809773613.pdfIn PDF document text
    • https://ifbscalidad.eus/files/galeria/files/gorusonezenal.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/d0264709895071e30918f1cb99ec39cf/89894521255.pdfIn PDF document text
    • http://longarmquiltacademy.com/fckeditor/userfiles/file/nejusigexizev.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f368d5f2692---44296122298.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=personajes+reales+del+cartel+delos+saposPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001071b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071B 10544 bytes
SHA-256: 22fa006cc4a0206809e9388a5ce74b7a2f3449fc2e492da9017c73bc232f11b5

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