Malicious PDF — malware analysis report

Static analysis result for SHA-256 06fd60ebffc67676…

MALICIOUS

PDF

89.0 KB Created: 2021-08-19 16:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d934186a0cac521b71208b8681fab66b SHA-1: e0632dde657bafcb8505f90305cbb525f623d0ab SHA-256: 06fd60ebffc676764131abbf1c4556ed32b6dd96c91f619f177c2c8ce584b894
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs that redirect to various websites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan distribution. No scripts were extracted, but the presence of numerous external links points to an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pistant.ru/uplcv?utm_term=download+codashop+ml+mod+apk PDF link annotation
    • https://aawyx.com/sites/default/imageuser/file/xojebaxofazazopuw.pdfIn PDF document text
    • http://alkanboya.com/files/file///36326517973.pdfIn PDF document text
    • http://studiotecnicodavico.eu/userfiles/files/37193711287.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/e65556fbc2e454594baca7e0ff3fa217/karuxoduteden.pdfIn PDF document text
    • http://ahrestygz.com/userfiles/files/20210717_170244.pdfIn PDF document text
    • http://newbusan.net/FileData/ckfinder/files/20210624_803FB1967F4994D9.pdfIn PDF document text
    • http://tai-yang.tw/taiyang/upload/file/bazapitodatukoje.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a200e897dfb---nutexanuvutumog.pdfIn PDF document text
    • http://tmacfashion.com/ckfinder/userfiles/files/59829306073.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/065fb82fd3c472476443a4af0f752893/77701919721.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/0d0bd51354142e2de26d6efe7dc3e474/tobiloxubibibumatobiwilev.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c423200a2f---sodopaboxapubaxawirapobul.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/49b8f7b79ef56d57f2a133c85ee9478a/miwuguvujemesiwidezeniveg.pdfIn PDF document text
    • http://dh-cell.com/ckfinder/userfiles/files/4809846160.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160893b38cee9b---2366785729.pdfIn PDF document text
    • https://semsaesp.com/ckfinder/userfiles/files/82554518348.pdfIn PDF document text
    • http://meuble-tunisie.com/userfiles/file/59342492077.pdfIn PDF document text
    • http://www.biosafety.biz/ckfinder/userfiles/files/baxedulazobadetom.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.com/ckfinder/userfiles/files/porajov.pdfIn PDF document text
    • http://samsung-service-center.ru/uploads/files/50167495417.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/tefobulilixizede.pdfIn PDF document text
    • http://lawngo.net/fckfiles/noxodunogur.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/13642707592.pdfIn PDF document text
    • https://jurad.eu/files/file/72026200564.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/nopazutunofuzupow.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A1 10536 bytes
SHA-256: 7eb4b8f4534298099a1aca74aa6b21f8d7af0cf8b6b990f2be6c5d8fd89fb910
font_01_sfnt_off0000fa6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6E 16168 bytes
SHA-256: 2f088311e3cc47affea05821c2def65328b1f74a195200b1b3e81469be6e99d2
font_02_sfnt_off0001100f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1100F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12821 17100 bytes
SHA-256: 400bd5897304c7b06c79c70accf857fcf42a79fd8455b4c345b7c3ad29c5e13f

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