Malicious PDF — malware analysis report

Static analysis result for SHA-256 018f2475a6956235…

MALICIOUS

PDF

91.3 KB Created: 2021-09-16 06:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 30f3169641d1786db11614aa8d0f822b SHA-1: 405d75a1b52ec97bc23aaf798557e899ed81f813 SHA-256: 018f2475a69562352c17d62b066aa26042e71540395302d82dc08ec41738cd56
126 Risk Score

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jtg-antracyt.pl/files/file/sonibudiwaziretofod.pdf In PDF document text
    • http://zamdq.com/filespath/files/20210904012700.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613848626cac5---48070980016.pdfIn PDF document text
    • http://rc-mst.com/mst/_upload/files/31015507270.pdfIn PDF document text
    • http://indyskischool.com/ckfinder/userfiles/files/belima.pdfIn PDF document text
    • http://goodwill.pl/userfiles/file/86992820522.pdfIn PDF document text
    • http://rowerowaszkola.pl/imgturysta/files/63824256570.pdfIn PDF document text
    • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wurogadogajawa.pdfIn PDF document text
    • http://kronospan-mofa.hu/editor_up/kagamerozizirife.pdfIn PDF document text
    • http://lasfyy.com/uploadfile/file/20210904004455573.pdfIn PDF document text
    • http://sushibelovo.ru/files/tegojedinos.pdfIn PDF document text
    • https://cian.hr/userfiles/file/mudipezu.pdfIn PDF document text
    • http://hrudolf.com/userfiles/61488194463.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/28049494288.pdfIn PDF document text
    • http://nuovojob.com/userfiles/files/37276933661.pdfIn PDF document text
    • http://kukubara.com/zdjecia/file/lugagituzuditoduravofa.pdfIn PDF document text
    • http://brain-sh.tw/upload/file/nefomimenetuzuwu.pdfIn PDF document text
    • https://rougezenekar.hu/files/file/60613039430.pdfIn PDF document text
    • http://bouwbedrijfbouwheer.nl/userfiles/file/kafewususijawofem.pdfIn PDF document text
    • http://www.rodnolespropertymanagement.com/siteuploads/editorimg/file/98564476669.pdfIn PDF document text
    • https://nexapos.com/upload/files/rofoxopaxi.pdfIn PDF document text
    • https://duproject.com/uploadEditor/files/27540529541.pdfIn PDF document text
    • https://rowsontw.com/shopadmin/upload/files/gazet.pdfIn PDF document text
    • http://eastendmediation.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/96934093597.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=rick+and+morty+season+5+episode+3+123moviePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C8 19168 bytes
SHA-256: d0a078efa724608883f34560f474cd24ade24184583730e91c6e26c0ec498945
font_01_sfnt_off00012a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14256 11424 bytes
SHA-256: 53b8e14c632ae8488251296d5f301ffac78c75b6c9771d09d3e6718a1ae3835e

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