Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc285f2821445ab…

MALICIOUS

PDF

102.5 KB Created: 2021-06-30 18:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 887a56e4f46484bd72867455f6b8b543 SHA-1: 9a9bf5193c8ba4ab667fcbc2405c0ebf082dfadd SHA-256: 0dc285f2821445aba8d0ed903e522c2b717bbb4207e476a208106deb62fde4b2
156 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to compromised WordPress sites, likely intended to redirect users to malicious content or further stages of an attack. The presence of numerous distinct hosts and the use of disposable hosting indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e6097e313---fobufizovukujaxem.pdf In PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/vuwijomomidufinerifula.pdfIn PDF document text
    • http://halmar.info/userfiles/file/10638844556.pdfIn PDF document text
    • http://cuacuonanbinh.com/userfiles/file/1239143254.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/gigidisujuzakigimakawavu.pdfIn PDF document text
    • http://seigyobannkaigaikikaku.com/ckfinder/userfiles/files/43205127821.pdfIn PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/da40839440e588732291a7c13d0ecedd/vetexozatege.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/ff131f3fd3fc35ca5c4e28fabacb9672/87078929121.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c772745d61---gajulizasizajiw.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/ckum9hnpahl5p5dugi3k6beb4h/95757155375.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c07b690ec4---31335640028.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/gq983gclngh6ouai3evc4qhg32/52288650100.pdfIn PDF document text
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/0068637ce5a7546ca8510163ac7ca9e7/xotuwizukof.pdfIn PDF document text
    • http://le-bouquet.be/userfiles/files/75063194684.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/cntjk50jn642qa1iq3cfcgelgg/nulogezixog.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/userfiles/file/10268165093.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/kuvok.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ed8ebd3a9---zetodazapodonekas.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607a58173a7da---42344142818.pdfIn PDF document text
    • http://bukvoznaika.ru/ckfinder/userfiles/files/16544237320.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/f85ab4bb45d3a7ee021b168be0b3aab6/fesikupowigexej.pdfIn PDF document text
    • http://quangcaosms.org/media/ftp/file/91992284451.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/bam7pt1mp12hgc3cs6u4sk659q/lowovuk.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=felicity+conditions+of+speech+actsPDF 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_off00012dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000145be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145BE 18424 bytes
SHA-256: 0b2d4f195e846f0170e1bdf2ed2ce04e82a93fcaba440f237a31dc0be11b20b1
font_02_sfnt_off00017475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17475 10708 bytes
SHA-256: 7ce570a908957b9ec9660b84b68c1866b7432efe6ea0bdc0077a263809568fb6

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