Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab294e5dee8b71c…

MALICIOUS

PDF

86.2 KB Created: 2021-09-07 13:33:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: fb220140c9d8dc920651cd7b79ac9a04 SHA-1: 68415890e82b119d9e65e7ac0b9142a70a6011fa SHA-256: bab294e5dee8b71c6cb89565ea258b985dca772be4f5705e283adbb9341db338
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document was flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is unreadable, but the presence of numerous links and the 'link farm' heuristic strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://pmeds.us/userfiles/file/bebirazixomaxe.pdf In PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/bd8e47d97bc1d91bed94948e18438db4/23598958652.pdfIn PDF document text
    • http://ithaca1966.com/clients/8/85/85e9e0a76fddb83d7689cebc6ab07fae/File/99091247968.pdfIn PDF document text
    • http://vanguardhungary.hu/userfiles/file/jumafalodidiparibuno.pdfIn PDF document text
    • http://hghs61.com/clients/9/98/9814c5f28b4e93efd1f74733a9fd6b0f/File/soridederanabarevete.pdfIn PDF document text
    • https://noticky.net/akce/fotky/file/mezegarirexoz.pdfIn PDF document text
    • http://atek-ent.com/upload/file/40107482958.pdfIn PDF document text
    • http://chocoenglish.com/_UploadFile/Images/file/liwojovu.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beeee27d66b---vivujo.pdfIn PDF document text
    • http://girl0229960192.com/upload/users/files/sesajebelaxu.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/fozagosetipodif.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160753677513cd---ketifegafuvawejadinujonav.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c6f27a70e---maxibuzopenigiwusifutug.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16128a8a85c7f5---36358330611.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/nobatejutu.pdfIn PDF document text
    • https://securitydm.com/slicice/file/93408458775.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/86df0208d042acf8e417139d07fb8334/15499783938.pdfIn PDF document text
    • https://charterfori.ir/basefile/charterforiir/files/8298056268.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610668dfe7376---xilivamavevonusuvalasofus.pdfIn PDF document text
    • http://galluccifaibano.it/userfiles/file/19276570961.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/jozupinagopuguro.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=comparing+photosynthesis+and+cellular+respiration+pdfPDF 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_off0000e46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46B 11312 bytes
SHA-256: cd36dc47c3066288b4c895f4c89c04d1ea6cd2c760fc90e6f117e2a8a1b0bf1d
font_01_sfnt_off0000fea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA4 20572 bytes
SHA-256: c4d9a8260f70d4fd871ce82f195bb5f30e1ed5edf36c694b89701566e6bed95b
font_02_sfnt_off0001333e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1333E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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