Malicious PDF — malware analysis report

Static analysis result for SHA-256 032e80799288884a…

MALICIOUS

PDF

64.0 KB Created: 2021-09-10 07:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e82523a097b8dcb8423baa57e7bd5918 SHA-1: 795ca52c16c72d71efbf4dc6ba58d5623e226834 SHA-256: 032e80799288884a14e91584db5f6a4f3c1a5b7d495e311de6599527e733a1ef
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. The heuristics indicate that this JavaScript is likely used to redirect users to external URLs, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution campaign. The ClamAV detection further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7025

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.
  • 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
  • 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://synerhu.ru/uplcv?utm_term=cheat+harvest+moon+android PDF link annotation
    • https://coaching-jk-academic.com/ckfinder/userfiles/files/midamap.pdfIn PDF document text
    • http://amkchem.com/upload/files/89423248434.pdfIn PDF document text
    • http://studiotecnicolari.it/userfiles/files/goxopokuzo.pdfIn PDF document text
    • http://artechq8.com/beta/uploads/files/53844730269.pdfIn PDF document text
    • http://solemarservizi.it/userfiles/files/wibujuwezoguxekelukaza.pdfIn PDF document text
    • http://inbeeldt.nl/userfiles/file/serazo.pdfIn PDF document text
    • http://abwbaltimore.com/uploads/files/bisif.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/8477br7nk38es7jgia04o29lt6/10596369880.pdfIn PDF document text
    • http://alburigiott.it/userfiles/files/vatitog.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137c67419142---volako.pdfIn PDF document text
    • https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/gabubaganowidu.pdfIn PDF document text
    • https://htchninc.com/d/files/namejo.pdfIn PDF document text
    • http://ozona.pt/js/fckeditor/editor/filemanager/connectors/wysiwygfiles/file/mijotinafuguliz.pdfIn PDF document text
    • https://sanagustin.cl/files/79374120512.pdfIn PDF document text
    • http://bulk-supplies.com/userfiles/files/fewikedijezudivu.pdfIn PDF document text
    • https://tylbm.com/Upload/ckeditor/files/2576200881.pdfIn PDF document text
    • http://majortaylorride.info/images/uploaded/file/remugufaxawegirore.pdfIn PDF document text
    • http://sdtrafficticketlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/teroborevebidupumogimoda.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135c81c46e48---57115277496.pdfIn PDF document text
    • http://ultraljud.nu/bild/files/82095126520.pdfIn PDF document text
    • https://congchungnguyenlieu.vnpec.xyz/uploads/files/60548718161.pdfIn PDF document text
    • http://tipsclubcr.com/campannas/file/5865000954.pdfIn PDF document text
    • http://yeosingol.com/FileData/ckfinder/files/20210909_F57C18F940FEDBED.pdfIn PDF document text
    • http://cluster006.ovh.net/~greeters/namur/ckfinder/userfiles/files/xuvor.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC2 10564 bytes
SHA-256: 072c4a3700337ef7064bea85d421c8b61b799c7552696f7a3f6ee1e94fcfd04f

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