Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bfe01df64c77164…

MALICIOUS

PDF

68.3 KB Created: 2021-05-19 22:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91d242443e36b1664bc81908b9abe9ae SHA-1: f8a1daa3abf4be3445899108affcca51811be231 SHA-256: 0bfe01df64c77164379f76e4bad8ce1e85f94067b58dc7cee1a20a7101e2fa3c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to downloading movies, which is a common tactic for phishing and malware distribution. It embeds multiple URLs pointing to compromised websites, likely serving as download locations for malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9668

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://nomylo.ru/uplcv?utm_term=latest+bollywood+movies+2019+free+download+in+hd+quality
    • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0ab002503---pegevegun.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f8d8d12a8---39671829414.pdf
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081d87ba1003---daritid.pdf
    • https://etonbio.com/newsLetters/images/file/wakoxuj.pdf
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/9fc9e6c639f037fcac3221a81a6e9ea3/65700555273.pdf
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/nh39j5gb6mfhu6dk6h07higb91/53839140411.pdf
    • http://asfalon.com/__files/file/zawefaxeduvemifozovadudul.pdf
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/8e3673ff27e5b30a708761bb6936423f/mudutomezabuxofawumip.pdf
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/rcmfig44kgv4nb85vokkno75i4/jebekinavujofetikunaveki.pdf
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160889d7ae1b2d---vekiwakusuzosipaparilu.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079f13c05cce---dexaj.pdf
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072dca552515---96501901430.pdf
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/35caob1img69qmacjqhrl2bi51/xanuxobazawinevi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d758.bin
541f11af6a0afdea0667c39653b59ee4016564514ea41bd8d26cb767ee15b44b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD758 6088 bytes
font_01_sfnt_off0000ebfd.bin
6157e575a6cdbe8d3b12e50fc1cd604b300f4ac630f1f40f9363f0dbf4c57d62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFD 10236 bytes

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