Malicious PDF — malware analysis report

Static analysis result for SHA-256 194566d39e455578…

MALICIOUS

PDF

83.7 KB Created: 2021-07-05 06:36:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 11bc1a440704171bd68c8e5196cb930c SHA-1: 4c9e415140f0652ef2f5c1bc4f3ba07bedaf4558 SHA-256: 194566d39e455578cee6797a6ab5215d99912f519312fc0fa021bd948fe9a4ea
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute phishing content or further malware. No scripts were extracted, but the overall structure and URL patterns strongly indicate a phishing or malware distribution campaign.

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://philabc.ru/uplcv?utm_term=green+spotted+bug PDF link annotation
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/8702bc536420545fd690d167925347ab/23468954939.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a750c6e97cf---73497111080.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16083a6ebedb21---60582945112.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/2552643fedf5deb662efa59dc730785b/ronulagitutigukoxazorax.pdfIn PDF document text
    • http://talleresjpg.es/img/file/52593826723.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/52cdba0946195ade4aeeb65169ddb7ab/69873491843.pdfIn PDF document text
    • https://faceless.me/userfiles/files/numazevunadopexu.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef8ed063a4---robiworewe.pdfIn PDF document text
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/crgbdhmq6og3gkga1cks1cifbn/bogamab.pdfIn PDF document text
    • http://brmxn.com/userfiles/file/20210619135525_ggdhhd.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/4g3uspet54tadref5b57slg648/83263442046.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085581ba8a2d---madilirolemetomawemafoke.pdfIn PDF document text
    • http://a-mega.ua/images/uploads/file/vodavasusozu.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/81195984157.pdfIn PDF document text
    • http://flomojapan.com/upload/files/jepenojowofilunukej.pdfIn PDF document text
    • http://pinturasoltra.com/images/slider/files/vufoverelelezekegejokixa.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a0eb0e984---mosekenegamag.pdfIn PDF document text
    • http://cephedanismani.com/images/pages/file/jikanir.pdfIn PDF document text
    • https://tramtron.vn/uploads/files/files/gotirolowoxebu.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/f4e36fa63b800a948740926dd5c92a34/pewiruworina.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083fa76191e2---gezukig.pdfIn PDF document text
    • http://wumag.pl/userfiles/file/mirusanonopebewus.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/pomalewesa.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

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_off0000e554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE554 17036 bytes
SHA-256: df95ce7637104ad77d9d27440ff734412d43be232e5fea45189c5251db37bc52
font_01_sfnt_off000111d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D5 10548 bytes
SHA-256: 42925d585775d0b88a73439e62f89887011190cfd474a040730c205eda8cf382
font_02_sfnt_off00012992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12992 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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