Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ba74bbc223ad53…

MALICIOUS

PDF

104.0 KB Created: 2021-06-24 14:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fe132207ee0072e65b4d129de6ccf39e SHA-1: 0d6e951fbf4f2706a05bbe14505c8e0831bd35fb SHA-256: 29ba74bbc223ad53e3c96d1d7371221d9d9ac1c15a474eb83ab50f844d1c1423
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 malicious score 0.8681

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://archism.ru/uplcv?utm_term=lotka+volterra+pdf PDF link annotation
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/7h8p4qstkmhf6ha8hhju18l7s3/66074526463.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607be6794eb77---27704725152.pdfIn PDF document text
    • http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/92998980620.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095eb8a8bcdc---13615267757.pdfIn PDF document text
    • http://kaies.cn/upfiles/210617213920987852syjbgp.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a39904f0dc1---60210012525.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/kukutazit.pdfIn PDF document text
    • http://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/wapiluwabalulanizad.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/b19c0f1fd27caf39948958c965efb0e8/dabosesosojef.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b9c741ac23---rimetokevig.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7d538a707---xegilira.pdfIn PDF document text
    • http://rauvuonsach.net/images/uploads/files/kolukufokobukuzi.pdfIn PDF document text
    • https://kurtoglumob.com/upload/file/39019550121.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/16084b5c876e2a---50499057085.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/burd9hdc3iucjd4ilqkjt9aeim/bitagawefifuribezisiza.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/77c15601ed8c4ce6955a9de2fa5de81a/20749168703.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
    • 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_off00014fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FD8 4924 bytes
SHA-256: 1d6b6e49b8595faaf235e12931e9f14bf66c45eb708ccf5e95de91baff1e7b8a
font_01_sfnt_off000160b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160B8 14260 bytes
SHA-256: c5fe4383310b403e14ad52cb6e0486ade28de29466312c95f64bad2a9002e410
font_02_sfnt_off00018f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F26 16144 bytes
SHA-256: f7f944af48a1f29a4fc81369acbb7667dc0c0bb312d09d0e658341ed730dbf86

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