Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e2c2121f84fb22…

MALICIOUS

PDF

80.0 KB Created: 2021-07-06 20:07:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 88b37a1a1bc976e3506d39341787d57c SHA-1: 477ab46f524fda65fefbe3042528d20f08dd1aff SHA-256: 30e2c2121f84fb220399f89fdee5820d0c9c42868c3345447c02abad36822384
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external URIs and embedded links, many pointing to compromised WordPress sites, suggesting it is part of a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate it likely attempts to lure users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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://irlanc.ru/uplcv?utm_term=clank+of+metal
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/df453796314b04bb239aab7032fb55af/niwesola.pdf
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/kmqqul0h1f7j3oph934miktuom/luzepagoderibobewifuzu.pdf
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4123522492---56421280668.pdf
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/aae6913a278492a2c7e6cb3a61ecd00b/rekasorewa.pdf
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608871b9cc1d3---13162903046.pdf
    • https://artasedanasingaraja.com/uploadfck/file/69730626284.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160944a33c5790---5139422969.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/a75c563eb9e44d20c5719def4857e9ce/kuvurevemuko.pdf
    • http://beastyenergy.com/userfiles/file/lalizurosov.pdf
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/vtnhjo2rqp78s6ct5r30nvpsv6/pulisaroradawenulokukek.pdf
    • https://kenhquangcao.vn/uploads/files/75038522341.pdf
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/43778b6d643665769e0d4910633c5aa0/rixobodine.pdf
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160821edd9f478---28838862305.pdf
    • https://ekselantechnology.solutions/ckfinder/userfiles/files/sixipekokesasukafifexago.pdf
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/5shbkod8mei3nmf5pib1v51uc3/gogef.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e33205bc76---nesadedexikesipapirefap.pdf
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a885c15ad89---68877335877.pdf
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/1c7996480773ff73c3c9cdaf4f488e1d/rubapitolegirorosudivitor.pdf
    • http://hidra.it/ckfinder/userfiles/files/82545954832.pdf
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6ac896206---vabodilapuxejozibe.pdf
    • https://tiklatakip.com/calisma2/files/uploads/78568139418.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608329511c7fd---51797788481.pdf
    • https://betalinktech.com/blmedia/file/bexovidod.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d78d.bin
30d11e6102970eaea16c5c29664ef9687e23cceb44aa0cd6968f33b3ee42ec6b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD78D 16656 bytes
font_01_sfnt_off000102fb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x102FB 16792 bytes
font_02_sfnt_off00011b12.bin
e1466e6fe1751c9c1d98abb1e0b28591f4f4bc6605ef8823df0c719277310541
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B12 10140 bytes