Malicious PDF — malware analysis report

Static analysis result for SHA-256 5706b62d652ff144…

MALICIOUS

PDF

83.5 KB Created: 2021-09-15 19:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 5c2e0b232ebb780318e9310ced5b768b SHA-1: 349ce4a3409ff3dba19a8d698ed9ab6dcbb850fd SHA-256: 5706b62d652ff144d6ceb36e97a0494af0ca2c559aaac01647831103a8508070
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pixomot.ru/uplcv?utm_term=%C3%B6rnek+android+uygulama+kodlar%C4%B1 PDF link annotation
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161346f20e33cb---vekapibizazotunuwebaji.pdfIn PDF document text
    • http://damnoen.com/ckfinder/pho/files/kejapukakeviwepon.pdfIn PDF document text
    • http://tecs4.com/intranet/ckfinder/userfiles/files/posivigoruxatusuvi.pdfIn PDF document text
    • https://cafesca.mx/ckfinder/userfiles/files/zufuwa.pdfIn PDF document text
    • https://www.clinicaepilepsia.cl/ckfinder/userfiles/files/pavarorefididaxezela.pdfIn PDF document text
    • http://xsjprinter.com/d/files/64995855539.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/berekefogakadaxuwekimizoj.pdfIn PDF document text
    • http://dulwichtaxi.com/survey/userfiles/files/fegifiwetabisiwidif.pdfIn PDF document text
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/dasufalidosu.pdfIn PDF document text
    • http://mt-filtration.com/uploaded/file/44552691261385ce8030e5.pdfIn PDF document text
    • http://tangiahoang.vn/Images_upload/files/45745343901.pdfIn PDF document text
    • https://arab-hams.com/Ups/files/lijevotebuwogeroreb.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/fdf1b220ed393d69ccad22dc4540b8e1/lolazolozeru.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.org/upload/files/zulepaponufomeporeruz.pdfIn PDF document text
    • http://whuntex.ru/userfiles/file/39113382683.pdfIn PDF document text
    • http://combatkuntao.com/ckeditor/ckfinder/userfiles/files/90344201628.pdfIn PDF document text
    • http://duepassidalcentro.it/userfiles/files/jabunijaxaluzidopanisob.pdfIn PDF document text
    • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/daluxaweraxaxaj.pdfIn PDF document text
    • http://abwva.com/uploads/files/wonakobikesovufo.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/68116328965.pdfIn PDF document text
    • http://wijnhuis-vaessen.nl/site/data/ws/files/gilepewakaga.pdfIn PDF document text
    • https://kawanmto.com/contents/files/85572187574.pdfIn PDF document text
    • http://chemsdano.com/upload/files/dorojafagiledag.pdfIn PDF document text
    • http://wolfpackbasketballacademy.com/content_docs/54358272472.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_off0000dd4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f55c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55C 19400 bytes
SHA-256: d006889167203fdc5e60aa0132f9795f6b9b30eed9f94ca634d983b6492e1c89
font_02_sfnt_off00012620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12620 10800 bytes
SHA-256: 13550de7d560a770db5c74afafd84d95445d84b75f5c7fad0c03a25c7f74117a

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