Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa1c60ec39a588a…

MALICIOUS

PDF

75.1 KB Created: 2021-09-05 13:28:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1da179e45b9bb2ed0ec381b7b4d28090 SHA-1: 60935a3516f78b28c92608545fddc9e8688af09a SHA-256: faa1c60ec39a588a456f527def51457fe855d45ac3661cadd79b1361b424b073
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised websites, identified by heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM'. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further indicate malicious intent. The embedded links likely serve to redirect users to phishing pages or download further malicious content, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7463

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://atolab.it/wp-content/plugins/super-forms/uploads/php/files/9afe567a354cff44ba3270f98a579f3b/38821497876.pdf In PDF document text
    • https://eksiliotomotiv.com/upload/ckfinder/files/69154027419.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/r7qr10gpknnjp0ru57jbtd4c4i/sosevutifilimuwan.pdfIn PDF document text
    • http://seritour.com/rsm/files/wodelumajefixetiketelu.pdfIn PDF document text
    • http://thedreaminitiative.org/Content/Admin/uploads/files/wasakinagujotaw.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/rrm69dbci3hqdqgpfhu8udkogq/retobuwudonesutavukorutu.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160aff99871ab9---godufowuparopemevo.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/i1c7tcqnme70l10sk75cbbh3cl/9627304101.pdfIn PDF document text
    • http://brnc85.com/clients/878796/File/bapepapewejafipidufoloji.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/37c969861e210a229bd57a6e48ed6b17/90628911579.pdfIn PDF document text
    • https://lawyerupsmart.com/tempimg/file/81695384322.pdfIn PDF document text
    • http://moon-villa123.com/CKEdit/upload/files/dexobod.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608362531382c---jezivapa.pdfIn PDF document text
    • http://thehigh86.com/clients/13680/File/luwutej.pdfIn PDF document text
    • http://abwcoliseum.com/uploads/files/ramoguwogadusulububegota.pdfIn PDF document text
    • http://dhs1959reunion.com/clients/871764/File/vakerutupawibe.pdfIn PDF document text
    • https://himarco.ir/basefile/himarcoir/files/20528525961.pdfIn PDF document text
    • http://shreejians.com/userfiles/file/zukiwa.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5c3d96675c---doxewetoliwoxekitow.pdfIn PDF document text
    • http://kimdaiphatsteel.com/Images_upload/files/89212617152.pdfIn PDF document text
    • http://geofer.eu/userfiles/files/83996052217.pdfIn PDF document text
    • http://alteredcompta.com/buddha/ckfinder/userfiles/files/26944155828.pdfIn PDF document text
    • http://krakow4you.pl/krakow/files/49767438850.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=romeu+e+julieta+em+pdfPDF link annotation
    • 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_off0000fe9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9A 20820 bytes
SHA-256: f5ff74bf9295fef04f507ef6dd0f311776888c65520d217debed9c370b975486

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