Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd2b2db2a6cb544…

MALICIOUS

PDF

88.4 KB Created: 2021-08-02 01:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ff2de3e759c28f8c0b9f958c5d0a53f8 SHA-1: 6e69a390de6a2ca414358c3199193bc06be4ccb7 SHA-256: 0fd2b2db2a6cb544c18dc25b2a7d64ebeae38c1079074ca8fec76977bc21f95f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to compromised websites and disposable hosting, suggesting it functions as a lure to download further malicious content, possibly related to loan requests. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://cafemsoffice.com/userfiles/files/55415264414.pdf In PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/59caca31a739c8e2c85249d4ce448791/ratag.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160bc797bc3a0d---nitererizisaro.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/bosupowofoted.pdfIn PDF document text
    • http://viettelhaiphong.me/data/dulieu/files/58965806595.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/23b0d2c4ad0f8831196622b4415cf93f/89459114800.pdfIn PDF document text
    • https://listapp.in/ci/userfiles/files/tupuvuwutivurotowine.pdfIn PDF document text
    • https://traffictkt.com/viking1/uploads/files/kokonesipuwag.pdfIn PDF document text
    • http://ledins.lv/cms/file/821035909.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071aef1855e0---27178546494.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bca5b5552be---12406522637.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608c48ef3ad92---xonalejiluvijofuvonaloleb.pdfIn PDF document text
    • http://danburyhighclassof1961.com/clients/b/b4/b42d7d7907ff1a67dd6fd366dd3c6775/File/73681116503.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/d457f617c011e44f4671c69a7cd601c7/kekewadipuzonisosogesot.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee4f36e870---mefonir.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609630796bb18---20993675512.pdfIn PDF document text
    • https://digireg.pl/upload/18556266296.pdfIn PDF document text
    • http://whalesart.com/uploadfile/file///2021052914251751.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a23c261c077---wezijejapeluxug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=loan+request+form+samplePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f9e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E9 10632 bytes
SHA-256: 023d1e85b747451b82d848f4117db7d85f3764f20c65f1e2ec300ae55ead1e3c
font_02_sfnt_off0001123a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123A 16084 bytes
SHA-256: 86e84c66d8d6f41aa4fd4ca3112cd9676e96dc3ca2bc086eac79e8f8eb451e33
font_03_sfnt_off00012763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12763 17068 bytes
SHA-256: 1c0eca5abd7e16b2d9e70bdaad9a6ef0a409aa503f1d5363c2c03c2033a64167

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