Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eeb9815d4113195…

MALICIOUS

PDF

82.9 KB Created: 2021-09-06 06:17:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 4960ee885553bba218d4facaed1c8351 SHA-1: fae45aa2590f479f54790e8e567701751b0f1944 SHA-256: 9eeb9815d411319599e42ca45f6c3c14c5f4bfd5e969f8bdbe39d5c72f4af50c
96 Risk Score

Malware Insights

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

This PDF document was identified as malicious by an ML classifier. It contains numerous links, many of which point to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and does not provide clear instructions, but the presence of link farms and compromised hosting indicates a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087234022597---zilofogova.pdf In PDF document text
    • http://idominjazz.com/fckeditor/userfiles/image/21043715137.pdfIn PDF document text
    • http://sunjewelsonline.com/userfiles/file/kumagelidosevif.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/160db2a6d625bf---depujofosedizedipaloxa.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/nomiwo.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/801fc7e9b56c67e532c1e45793d770c9/wipakufisozeboleluvasa.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/dvedn2isud6is7d7sch14shro1/50863988997.pdfIn PDF document text
    • https://systematix.pl/userfiles/file/89319417794.pdfIn PDF document text
    • https://pastelbuilders.com/userfiles/file/4691310935.pdfIn PDF document text
    • http://cherryontop.pl/upload/fotki/file/65599139172.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160935b9c1ba93---kixorelogigepa.pdfIn PDF document text
    • https://rkdestate.com/userfiles/file/bixeruginakinutotep.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/881189577ddfbe8a67a3f7209365751f/gakanobivuw.pdfIn PDF document text
    • http://dientrotiendathc.com/media/ftp/file/75436982924.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16095d2ee3f45b---33974089293.pdfIn PDF document text
    • https://condicionamentofisico.com/arquivos/file/42709152643.pdfIn PDF document text
    • http://goodfortune.hk/UpLoadFile/file///76734260748.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/lrvgj3pi767ure4040iv7iuufd/lerajovabironosazevuw.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e94b99e9c9b---54263957494.pdfIn PDF document text
    • http://grandviewgroupresort.com/upload/files/82546274650.pdfIn PDF document text
    • https://anpheatingandac.com/nbloom/fckuploads/file/gopiv.pdfIn PDF document text
    • http://donauwell.at/userfiles/file/39739085121.pdfIn PDF document text
    • http://curvesncontours.com/userfiles/file/dijagofavefalazedurimabus.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/ac0df7aba037a58a573ab0a8bd81fa29/galamosivifetoz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=filter+coffee+machine+user+manualPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8F 17788 bytes
SHA-256: f4df5328b256b50cf32157c754b454615046a24088cef5d094aa4bd601dd9b21
font_01_sfnt_off00010d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001258d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258D 10676 bytes
SHA-256: b9047a9cd560da9f0484691b3bb07cd1835e15caa5f7df00d8d04c4bba52cb31

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