Malicious PDF — malware analysis report

Static analysis result for SHA-256 45a066b15862cbc8…

MALICIOUS

PDF

80.6 KB Created: 2021-09-02 00:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 69c00f1e59a5fad8bea88770cee73723 SHA-1: 9dee7083ba087f6512bf0d2c536de32a996fd2d7 SHA-256: 45a066b15862cbc8c71a2368b3d51629c06088fd3fbfc0a0be121eb76fd23448
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to potentially compromised WordPress upload storage and disposable hosting. While no scripts were explicitly extracted, the PDF structure and link farm behavior suggest it's designed to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://rauvuonsach.com/images/uploads/files/35044915175.pdf In PDF document text
    • http://deleersnijder-bocaege.be/images/file/7408699377.pdfIn PDF document text
    • http://mediaworld.pro/ckfinder/userfiles/files/mipiwosudorariguxa.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/6jopajm6ann8sl4frkh425ktpk/60694170426.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16070410c3d30b---61482489051.pdfIn PDF document text
    • http://divodizain.ru/ckfinder/userfiles/files/xikexobuponopate.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/disajukopotimak.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/82450459045.pdfIn PDF document text
    • http://hidropro.hu/upload/soxototisurusopagome.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/ls0adoveke3qm9e0038683l7a1/39225061579.pdfIn PDF document text
    • http://tiramisu-o.com/yamituki-n/uploads/files/wenabevofifobuveruj.pdfIn PDF document text
    • http://www.greenbriarpropmgmt.com/wp-content/plugins/super-forms/uploads/php/files/e70635f5b02f0f3ff3230d39683e3a6a/xekugixidagojog.pdfIn PDF document text
    • http://casinodanmarkjackpot.dk/userfiles/file/9862450932.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16119d16083e2a---48854717775.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ltoog39sij6pb26k0o14u0bjq1/womako.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/6a09b36263f12d31cbde1ae22c07617b/19740769663.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/najimajur.pdfIn PDF document text
    • http://dkmmotor.com/files/userfiles/file/15057286991.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ae32f4a162c---wosajone.pdfIn PDF document text
    • https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/40a5de228e6f32e0d278838e78520456/87269085375.pdfIn PDF document text
    • http://futurepoolandspa.com/ckfinder/userfiles/files/17910380984.pdfIn PDF document text
    • http://mesahighclassof63.com/clients/79820/File/28860646993.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087723e0f8d9---81057755537.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9314e6e18d---82616216546.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a84b4eb96a8---88389054406.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=download+song+my+heart+will+go+onPDF 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_off0000d082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD082 19436 bytes
SHA-256: 96c718f4241cf57c7919f6cd6b4df54b1f498c23354759e210fb48ce1f4475ca
font_01_sfnt_off0001039b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB2 10896 bytes
SHA-256: c0484c561fbe841f76e33e2bff7ac4cd7ecd3209adaec570fd16d15886696a75

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