Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40e330107abeba6…

MALICIOUS

PDF

89.5 KB Created: 2021-08-12 06:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ebb4e6b03a48ca70fd25a04a1e3034e5 SHA-1: 9815ed87ce6ad0aed2f1a09520b39a2e1dd63d49 SHA-256: d40e330107abeba6ca2afefca6d7f59ffe4865080f48feb6b2419836d2a93626
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary goal appears to be directing users to download further malicious content from these compromised hosts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0e144e152---39831657627.pdf In PDF document text
    • http://rowanfamilyreunion.com/clients/28915/File/jifoxoximelosixulob.pdfIn PDF document text
    • http://bumsnab.ru/uploads/files/25384738676.pdfIn PDF document text
    • https://rcot.org/userfiles/file/22822611076.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161052c5879cc5---najufalefexexudovolaz.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072758b25fd3---xuvepujej.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/91rn84kgvilsr816o3c0b92qfo/romoworumedore.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f420b08e1b---7886774654.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/161037fa5aeb02---39575854994.pdfIn PDF document text
    • http://tfh-filter.hu/_user/file/xokupabavowagelux.pdfIn PDF document text
    • https://anandamsanyal.com/userfiles/file/bulisekewibezemurewuz.pdfIn PDF document text
    • http://aliglobshop.com/userfiles/file/kevemoxiw.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160925cad2d77b---11804770910.pdfIn PDF document text
    • http://yuha.be/_files/file/juvatatesoma.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160acad076f77d---gafukevuzuwemuboka.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/jagb9basdn63uu8104rh05d7ob/83892264714.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/19084d06b4eaadfbe124dc0226d18df2.pdfIn PDF document text
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/hf4dn6411ncsi36f3n33cg5p5v/43103518259.pdfIn PDF document text
    • http://ronniejoymemorialfund.com/clients/1/1a/1a75100f29d804137a154ca93ef51a80/File/butil.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/shaqlodf60vnfh6271fmsulaq0/tebosaporafovemabi.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/ae5cd9cc7c5c945a008588272e197de6/12767051804.pdfIn PDF document text
    • http://chelseacarpet.com/ckfinder/userfiles/uploads/99797208803.pdfIn PDF document text
    • https://hondamienbac.vn/userfiles/file/kirafupetozasiduxazepu.pdfIn PDF document text
    • https://autoradiator.mn/uploads/ckfinder/files/126331137.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=can+you+extend+a+tv+aerial+cablePDF 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_off0000f96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96D 10748 bytes
SHA-256: 9621d9c9ef3d25904fea1fcf4d5be123fc1f2cbd9080b445d8fbf4540f6fa955
font_01_sfnt_off00011256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11256 17008 bytes
SHA-256: 6014204aee40568cd83ef65c6bb23480d511503812f82e8061c585d26fcbb353
font_02_sfnt_off00013e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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