PDF malware analysis — malicious · 3015d8de0c90a010

MALICIOUS

PDF

73.3 KB Created: 2021-05-26 22:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13

MD5: b6bc5ac18b1a9d88d6f27851541b8f92 SHA-1: c46eea8ce84dc00d895a826b9e55f387cbdf9a7b SHA-256: 3015d8de0c90a010f5f312e9cfc75504abf60b0bf91ad9adf9dcbe3fdcb191a8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which are hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as a phishing trojan. The document body, though heavily corrupted, suggests a lure related to a movie title, likely to entice users to click on the embedded malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9852

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.
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://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8a974f2d45---11749050755.pdf In PDF document text
- http://wsp.pl/userfiles/file/18295878230.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897662511b4---97621185587.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160815e2fb8bec---46186986025.pdfIn PDF document text
- https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/33153747a8ab8713650a36d4a3cf532f/90851757061.pdfIn PDF document text
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071842ee7a25---82951829185.pdfIn PDF document text
- https://bharatbiodiesel.com/userfiles/file/raxususanuzironedewapa.pdfIn PDF document text
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/76b2b2085892ab288902dbdc3409e0c0/72661422176.pdfIn PDF document text
- https://xanbiente.de/userfiles/file/92646200017.pdfIn PDF document text
- https://aradovan.com/userfiles/file/96607247977.pdfIn PDF document text
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/e6de94078401d2eae62397275463fa0a/46114571099.pdfIn PDF document text
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928db50d3e3---92972647037.pdfIn PDF document text
- http://mppscstudy.com/admin/usercontent/file/zexifuwadok.pdfIn PDF document text
- https://aedwea.com/upload/foto/soburutifadif.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ea1073e165---bulejejodurokenawekus.pdfIn PDF document text
- http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/6cf59af18a3d906d2796d21ba2b68e4f/botuwisabu.pdfIn PDF document text
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cc2f8f6619c6453d74152cdbf9e79af6/nafunejoxi.pdfIn PDF document text
- http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/45dicbfkker8e2bofqk0uk1rm4/xonekaneninasibabi.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=carrie+pelicula+completa+en+espa%25C3%25B1ol+latino+2002PDF link annotation
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e020.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE020	3312 bytes
SHA-256: `ac66ddecb1889e99694234647e4a1e19b6174440e696c9ee44c6cb9711419273`
`font_01_sfnt_off0000ec01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC01	5468 bytes
SHA-256: `78d3bc9468896dcb5e80c4350ccec46d4ca8ff5e3ae136e1b938f6e274be72b4`
`font_02_sfnt_off0000fe3c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE3C	11200 bytes
SHA-256: `5be07dc813319e02bae678080d905871341e049ed6f20bc65e6d670daf79738a`

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