Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e3699a6ccc38ee…

MALICIOUS

PDF

74.2 KB Created: 2021-09-07 06:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 7fa333dcf02ecef292ea92ea81b13939 SHA-1: 0286b01f8e481a6e4d7b4c293857a70800b23cc2 SHA-256: 14e3699a6ccc38eebea684eeaf72125e03a2237d450ee671026858c9b346f889
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these URLs indicates an attempt to lure users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://chcial.ru/uplcv?utm_term=codigo+civil+boliviano+pdf+descargar PDF link annotation
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/1bdeb6437d25d7552a43b1d271682a79/57360428213.pdfIn PDF document text
    • http://edeins.com/userfiles/file/17038416957.pdfIn PDF document text
    • http://bakoca.hu/files/file/mevoruwaluxepepis.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/44777325625.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/ffed63bceca8358bf673ab141f862d67/gakalagivabodonodig.pdfIn PDF document text
    • http://gocreate.termall.pl/upload/fck/file/zojegig.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb00f824f2---kisuti.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0d636316db---supavudifakawafita.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/nexora.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/lesumolararoturatagogo.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/vivapadaxa.pdfIn PDF document text
    • https://organicfertilizerproduction.com/d/files/rodefaximob.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8d38be32a---dodutojedelala.pdfIn PDF document text
    • http://galsabino.it/userfiles/files/rutosatesolevufixoxofipeb.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/nusanukowobofu.pdfIn PDF document text
    • https://andhimazhai.com/images/files/21238893261.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/0792abdd70ddf48b622ab30150a8781e/86526321540.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/qmmcnnvblps0jb1a5299vg4u02/26499899578.pdfIn PDF document text
    • https://weekendtripskolkata.com/userfiles/file/ginilarofewuwe.pdfIn PDF document text
    • http://acupunctuuryao.nl/ckfinder/userfiles/files/71482321335.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/povajojaduxovigapu.pdfIn PDF document text
    • https://summit-christian-academy.net/scauserfiles/files/29966041965.pdfIn PDF document text
    • http://sushikyototogo.com/uploads/files/22316102834.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB74 17960 bytes
SHA-256: 4b6b0daba66683896a5e5f9266980cfbe2db49327554ffe4e8fa8e3c373eec39
font_01_sfnt_off0000e9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000101d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D4 10936 bytes
SHA-256: fc1b5d430190e037cba7a77988e538a705bc505691e3068a15b456469dfaaf7b

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