Malicious PDF — malware analysis report

Static analysis result for SHA-256 9159f296801a697a…

MALICIOUS

PDF

79.5 KB Created: 2021-07-01 21:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 6dce895bb3e047e4995386abc96d904e SHA-1: 0c59a54f1f3f197814fa897580c50abed6d7282b SHA-256: 9159f296801a697a075946e0d40087aa99f948c556bb0a44893c8f2d7416b7e8
156 Risk Score

Malware Insights

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

The PDF document contains a large number of links, many of which point to compromised WordPress upload directories. This structure is indicative of a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c793e0d94---bizoxuzirolopezuwine.pdf In PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a37c9dcf5e4---13313826240.pdfIn PDF document text
    • https://torgradio.ru/new/files/file/87527564603.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/37bb73e94ba8d8bb3d79d2a0f85da7ee/6512188996.pdfIn PDF document text
    • http://debeleven.net/UserFiles/File/877639305.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160837f6ec6356---91268823175.pdfIn PDF document text
    • http://ihvanturizm.com/rsm/files/refeda.pdfIn PDF document text
    • https://banghenails.com/upload/file/ziguvax.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/vubuxilus.pdfIn PDF document text
    • https://supermagnum-bg.com/userfiles/file/vodinaremotefebimituwo.pdfIn PDF document text
    • https://kopari.hu/files/file/11366815273.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f60a9898a1---78440660612.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/51478372512.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160725ca7187cb---numevo.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-12/20210512090036360129.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/d314a142d8e4b1d69d507deea6604b9b/likuduzijekasen.pdfIn PDF document text
    • https://hamasataccessories.com/userfiles/files/86465403530.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607917a1bcf4e---76727236116.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/loralome.pdfIn PDF document text
    • http://augsburger-dartliga.de/uploads/file/bofitokotavolil.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f48ded31b---gifonudenopi.pdfIn PDF document text
    • http://kaupa.cz/userfiles/file/8274507209.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=the+great+indian+art+competitionPDF 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_off0000d441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD441 17080 bytes
SHA-256: eca74928e940368dfae8fbfcc3c24f37579c51a59fe30710a36322733404bcf0
font_01_sfnt_off000100f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F7 10712 bytes
SHA-256: 2f089971ea43c9c6788287efc694d49d2d1b16d78f27f19769055d5452cf5a73
font_02_sfnt_off00011924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11924 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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