Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc08aabc2d2f0c9e…

MALICIOUS

PDF

86.4 KB Created: 2021-08-06 21:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0f2eb505cf6bbc1b7849837ff014d1ad SHA-1: 989accea8fe6e6f1f19361a64faf56cc65c0fc47 SHA-256: bc08aabc2d2f0c9ef75a8319c5fd2325468f910d71bb78378d69bc5925eec514
196 Risk Score

Malware Insights

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

The PDF document contains a link farm hosted on compromised WordPress sites, likely intended to trick users into downloading a password-protected archive. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document provides instructions for accessing an archive, a common tactic to bypass gateway scanning. While no scripts were directly extracted, the presence of numerous URLs and the overall structure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://philabc.ru/uplcv?utm_term=router+arris+tg862+claro+password+2019 PDF link annotation
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/57cdaed698a6e1e3cd84aa760c14b430/ridafetuzukesuvefaba.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/mn17ps4q1e76qi6kp4bft92e3d/joxisojuwajosozewenivog.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/xeledikesepusonevodi.pdfIn PDF document text
    • https://ovth.ch/userfiles/files/8471364838.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/aeaca87d5571623f1bf7596d06a91497/ladiruvetipizet.pdfIn PDF document text
    • http://www.trafikyaren.com/wp-content/plugins/super-forms/uploads/php/files/ppouk9kpkma1cagnionipblmt1/guzewom.pdfIn PDF document text
    • https://wrd13.com/force/file/76226491125.pdfIn PDF document text
    • https://ekransamara.ru/files/72755404833.pdfIn PDF document text
    • http://wangyiphk.com/userfiles/71343970559.pdfIn PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/difugugovaduvixukafodug.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/56693468852.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078a5ed029f2---gawatirusufevopavu.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/7fe20b9a2376889bc5e1e399ef9a4992/34999221361.pdfIn PDF document text
    • http://grimastone.ru/files/31281217153.pdfIn PDF document text
    • https://leise.ru/admin/ckfinder/userfiles/files/94956103656.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/5d47b325b5c5103250fb83b8ba9dc19b/96968812280.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/rst4708sf8ilt92blv5q3d571r/lubebutarugodozamaku.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16094601c31db1---woxezivunowubur.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609f494e823ef---69388048590.pdfIn PDF document text
    • http://bigband-ulm.de/userfiles/files/wafifotoxa.pdfIn PDF document text
    • http://immodraft.nrw/images/architekten_agentur_images_/file/kezisizizunakomepu.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607de12f7cca9---32693918859.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/jfgrmqu918bu8q56v1dlqce5js/dovowasove.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/57397647936.pdfIn PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/55713582860.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_off0000e5f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE07 11652 bytes
SHA-256: 01804fadb2008027ed63e16a4b8240bb055cce8675cfe2779467b9d3626bcad4
font_02_sfnt_off000119c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C8 18752 bytes
SHA-256: 38a6dbc30cce45dd2a8e6474facca6d36ded7cb552eae27eb8fbf7b2c60804c5

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