Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d6c0996fe05e1b…

MALICIOUS

PDF

83.4 KB Created: 2021-07-01 23:25:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: cbaec138ff575cdedd188626cc8a3161 SHA-1: 63ad3419b553efe411f09b0df60b3c5da1bb38c8 SHA-256: 94d6c0996fe05e1b7b0070ea6493081e2ef85b0b9277ebd391298751466dacb9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.2214

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 http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871a1680e94---20498082444.pdf In PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/36470255231f9270a1b445d500b030f6/18747729267.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087923fe3164---36994936003.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/55009cf349020cad08206055b5afc38d/21328839643.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/nawikuba.pdfIn PDF document text
    • http://fujavietnam.com/images/Download/futitobizu.pdfIn PDF document text
    • http://1959blackshirts.com/clients/866684/File/janarez.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/ridapanakupevijuxasusew.pdfIn PDF document text
    • https://ctapigroup3.com/contents//files/megugizafevonugorinon.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/wawuto.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/7eb99237d23489215accc3c542f54c46/96200172863.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/2cfd805854fbf497df84d2852e25033e/81402793396.pdfIn PDF document text
    • http://thepokeluau.com/uploads/files/92731868736.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073569af18f9---83596199477.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4fcf57cdc---89377503351.pdfIn PDF document text
    • https://isleo.com/i_photos/file/53585701455.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/a16cc2b7c3318dec086d75ce60fb9db9/tesevovugexefimune.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/soqrjejue2p3cvpi4pvatpfl1a/welixixoludarelasebem.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098bf4b0d9ea---ligikedijix.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/3f6spqicgsqk1lsj746j57rsii/dazosikavezi.pdfIn PDF document text
    • http://verkaufs-akademie.com/userfiles/file/77206372509.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/79078469260.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/905a6e335f6cec68dfce32aa5aeb7105/xegixek.pdfIn PDF document text
    • http://dekogard.net/deko/veri/_files/lerexumubafagoreven.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=execution+phase+in+project+management+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED39 17336 bytes
SHA-256: e80f0f25b5cb2b392d9a9fc0f2f2a916a082725f01756a80891992263cbc0720
font_01_sfnt_off00011a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000132b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B4 11336 bytes
SHA-256: ed1347e8eaba9d2b32570372a18b8c63ffa3025f1f5eb03841b4ed3b9d832c29

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