Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d13243d7496421…

MALICIOUS

PDF

75.5 KB Created: 2021-09-19 00:14:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b7e8279fcfcbab696a7c6945c59612be SHA-1: 569fc4b44370c90077fd0f581d6d99928870ea81 SHA-256: 02d13243d7496421c0ec6d0e5734faed31b29a81a965dc07f9c9c965dd608600
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains a link farm with numerous URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The presence of 'utm_term' parameters suggests a phishing or tracking intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://allytemp.ru/uplcv?utm_term=android+hidden+ssid PDF link annotation
    • http://www.anglometais.com.br/adm/Editor/ckfinder/userfiles/files/46303703086.pdfIn PDF document text
    • http://startmatbaa.com/userfiles/file/61995711462.pdfIn PDF document text
    • https://cuisinescartier.ca/upload/editor/file/muzujini.pdfIn PDF document text
    • http://talk200.com/admin/admin/uploadfiles/file/jojevuw.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16139e7f916203---kamozuwurafebajasovirazed.pdfIn PDF document text
    • http://slsnn.ru/content/file/vuwebixupilobowezoboduxug.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4559c6078---wetuponabenigovuwibamoxi.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/30876647474.pdfIn PDF document text
    • https://winstar-tools.com/UserFiles/editor/file/xejikabajobu.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141d34f1c984---zetagagulafe.pdfIn PDF document text
    • http://ourpreferred.com/userfiles/files/12613140324.pdfIn PDF document text
    • http://fli.edu.mn/ckfinder/userfiles/files/99529006372.pdfIn PDF document text
    • http://eamenfaraz.com/cache/fck_files/file/sapofovakiwetube.pdfIn PDF document text
    • https://redac.ch/upload/68837051677.pdfIn PDF document text
    • https://europawindow.com/app/webroot/img/main_content/files/buvajijuzevozisunufadipe.pdfIn PDF document text
    • https://copab.tn/216mag.svn/uploads/files/dajisefelexiv.pdfIn PDF document text
    • https://rugsinc.in/UserFiles/files/6242146475.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d79ba2e74d---vipol.pdfIn PDF document text
    • http://yuli-china.ru/d/files/49396686699.pdfIn PDF document text
    • http://gazosilikatnn.ru/uploads/files/ronazisex.pdfIn PDF document text
    • http://areawifi.com/DESARROLLO/userfiles/files/golapikikananusexekod.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f6c52cabf68de9217b4631dfad4b8377/39744124535.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/161446f130f587---8777679119.pdfIn PDF document text
    • http://giorgimpianti.com/userfiles/file/sezudusalasiwuvam.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_off0000c7be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dfd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD0 16592 bytes
SHA-256: 98bd3946baa759a17febd1fd4b302645627b04c983e88644ef517ef6b42a194c
font_02_sfnt_off00010a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A97 10020 bytes
SHA-256: a13c0719c14b30ecb76d4a080977dcd63cfa43bcfe49e7b61a1f63a1c7a354a1

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