Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75fdb35c01b29ee…

MALICIOUS

PDF

87.4 KB Created: 2021-07-19 14:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f0c06eac8ddfe4681f9bf3e3d92f9660 SHA-1: 1e427fd2556a01d5fbb7074a97314d82d4f46fa8 SHA-256: f75fdb35c01b29ee242db3cdde6379add072143eed999122cf430f3fb2a5aa59
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm. The presence of these links suggests the document's primary purpose is to redirect users to potentially harmful sites, likely for phishing or to facilitate the download of additional malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://pwr-tech.ru/userfiles/file/17581304598.pdf In PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/1b6f4b3abbf3fded8763b9ce7fbe100c/80202249350.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f1ef66b0df---fiwevizog.pdfIn PDF document text
    • http://bjjiffy.com/upload/77887618059.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d63948d6ca0---zijeraramul.pdfIn PDF document text
    • http://sanarina.de/ckfinder/userfiles/files/16267835609.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607b218cdd23f---vuwekaduwova.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/8c37876825acfb73531e47e3fe4fd6b9/sapofepavokekonudafepem.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/lepexusinisekuvir.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/f6ad84b8a9ea43be6575757d9c04b8e2/kegedozilajekipadiki.pdfIn PDF document text
    • https://actorconseil.com/files/file/balonag.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/ka71f9mscp4jncgcc46jvo8mr6/nimodusogidumed.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/zafowa.pdfIn PDF document text
    • http://psychoterapia-przemysl.net/img/userfiles/file/lezixogabisezadozigesifa.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/fdb1972e38aea60657f2d7c00ea35188/6421143582.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae90d47c9c8---82352355316.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/osp9jj8b9f9rcfln82f494ilr1/fexataxuwovodenoti.pdfIn PDF document text
    • https://bataretak.com/img/files/file/75683897607.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/23874dcd6d71466eaebbe5029b9de113/75430834953.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f79438694---bowigipopuvob.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160850b5f4671d---10793788096.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfed2d9d40b---xepimidobavawirus.pdfIn PDF document text
    • https://thegioibaobicarton.com/Images_upload/files/vibagaremamazesomunop.pdfIn PDF document text
    • http://cfacgroup.com/uploads/FCK_files/file/ruvixesovenazudugenodoli.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=cbse+class+12+last+10+years+question+papers+with+solutions+pdfPDF 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_off0000f06e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06E 11628 bytes
SHA-256: 782b055726efe704e684c994f7c88d591d3877cf629a7dfb75406dad8a36b641
font_01_sfnt_off00010bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC3 16848 bytes
SHA-256: 840c052523edbf5a665a2c34aa2df00a60faa2e977a1ffca22f6c1c4f200dc6a
font_02_sfnt_off00013776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13776 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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