Malicious PDF — malware analysis report

Static analysis result for SHA-256 24afd2a87a12c9bf…

MALICIOUS

PDF

83.2 KB Created: 2021-09-06 03:33:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 0759980f031ddce7d90154ba49b7c442 SHA-1: 2c805a68cd8b1ec0cddc08ee4b9f9befdda50d37 SHA-256: 24afd2a87a12c9bf8d4aed87ad7832f37f160c1d11d5e682b8349729f79c8cf5
156 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and link farm heuristics, indicating it is designed to redirect users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, with the URLs pointing to compromised WordPress sites likely serving as part of a phishing or malware distribution scheme. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=trastornos+del+neurodesarrollo+pdf PDF link annotation
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/6418a53438d01d4a2f6d968ec8defb38/zadafasolunosevabozurem.pdfIn PDF document text
    • https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea43e4e939---rozedemekogena.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5f9107c56d---foladetewutabiferinat.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/419619832cd6a81013cf88031df17c88/jukeridixumep.pdfIn PDF document text
    • http://boxerdapolenta.com/cmsimple/images/file/975524499.pdfIn PDF document text
    • http://mariopresto.pl/userfiles/file/webelepemiworijozi.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/b9a2fdb3c1d7a11a81926703f967be3e/janesizopidolabi.pdfIn PDF document text
    • http://portalpr-b2b.es/img/user///file/_0466799001628759668.pdfIn PDF document text
    • http://fteq.ru/files/file/vufadoxa.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608266e1c59c4---zinibexesisubovazoka.pdfIn PDF document text
    • http://geonatlife.es//ckfinder/userfiles/files/dirado.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/aeeb503751310f4e85add6bc78f498c2/jibuke.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/fussbb2rpf8lvafhu1s5gjdcp6/12936537722.pdfIn PDF document text
    • http://laptopcuhaiphong.vn/upload/files/kogutunopev.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/18311397314.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/file/rofanolosovakejutare.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/okol4ln6np4j4e0cu0m33g9ojd/49722907010.pdfIn PDF document text
    • http://polimak.pl/userfiles/file/23388001854.pdfIn PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/3590eb76c312c6fa374a3b9e01068adc/ganepolisirujez.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/rumodimesome.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/vimofumukukigifisomapimep.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d62d856a0---99402503519.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd014b17e9f---mutanik.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/3408b5e2140cead47254d8518d0a073b/72368877824.pdfIn PDF document text
    • 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_off0000e0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FB 18268 bytes
SHA-256: d40ecedf23b3fcdcbf873e1d52668fa600f7fbc43d69948953d4838b7114a6e4
font_02_sfnt_off00012772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12772 10460 bytes
SHA-256: 51b6a7304192f116bb99120fb5b628625d7fa37f231571383586bd5ce7653613

Open this report in the interactive analyzer, or submit your own file for analysis.