Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e5f61068ad5514e…

MALICIOUS

PDF

64.4 KB Created: 2021-05-29 17:05:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f467b7329fa25d231821e26008676976 SHA-1: 0ad3c32a0aca5b6b4be338432bd44c917f93ca65 SHA-256: 0e5f61068ad5514e499c530a3659a7655a7ff0ff838697b3c685007fcdbe5005
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to external websites, many of which are hosted on compromised CMS platforms. The document body, though heavily obfuscated, appears to contain a lure related to setting up an iPhone voicemail greeting, which is likely a pretext to drive users to these malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8592

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://crewmak.ru/uplcv?utm_term=how+to+set+up+voicemail+greeting+on+iphone+xr PDF link annotation
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/kgv0f6trbkmfusou05l1j4racd/sivelawimowox.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acd122ee2ff---43531888039.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2f2ef042a995ecb039af032dd5b33d88/30185964687.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16098548a46bcb---wurideliro.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/rilazotexaleta.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160722ede6c9e8---beloledomemamiluvazateti.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/f59c48000d5cbf48d9f951ea7eef1b26/86421142364.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/kodaworazoled.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/f0e91le56uptgu2ln55hc26d38/mixuri.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a807bfb0e7a---zavakanazemesirobuso.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/7a2759562073e886fd7f59df79943f2a/37527510541.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607248d9bea2f---piwutavipuwed.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/89078486156.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2837a90c5b---mazuzijosiwosasowew.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f42b17ff8e---62375362124.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/20215142018304715.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD141 5408 bytes
SHA-256: 12375ad1d741ec028eb87d2f8d44a2ee43a896040679f9f8d215f098591bf444
font_01_sfnt_off0000e38e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38E 9948 bytes
SHA-256: 83acda1aa2b48e9f740bd0ea319bdb0b89461af818e3afd232ac0aaa8c8403aa

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