Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e324a24221a17bc…

MALICIOUS

PDF

80.7 KB Created: 2021-09-09 18:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 4d9d50113cc06bb4722952747d8aab5e SHA-1: ccc318644b172db95d68ea149a76b5c6ccb86e06 SHA-256: 8e324a24221a17bc45aae3b69c5b4c7ee84fb24f058b1795022bba76617656c6
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 0.9977

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://barbusci.it/maisUserFile/file/35496571713.pdf In PDF document text
    • https://irantruck.ir/data/file/28324449023.pdfIn PDF document text
    • http://tainanrup.longi.tw/uploadfiles/files/20210903_155237_5893.pdfIn PDF document text
    • http://ovecollection.com/royal/admin/images/products/file/41552023116.pdfIn PDF document text
    • http://zhodnoceni-penez.cz/is/images/FCKeditor/File/xevimefidapu.pdfIn PDF document text
    • http://355353.ru/userfiles/file/salotenalu.pdfIn PDF document text
    • http://bratislava.topenglish.sk/app/webroot/gallery/files/jarazakudegawopazami.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/93e32b9dd2b60c852808ebe30813f8ac/6504600536.pdfIn PDF document text
    • https://lazdynumokykla.lt/userfiles/file/95264263360.pdfIn PDF document text
    • https://congtydaihai.com/upload/files/jojumawawokuzarolixiwe.pdfIn PDF document text
    • https://zahrek.com/userfiles/file/jononoveritugemefad.pdfIn PDF document text
    • http://bienbao.net/uploads/files/20805409461.pdfIn PDF document text
    • https://energooptima.hu/upload/File/wigibuvupogo.pdfIn PDF document text
    • https://www.whoamiandwhyamihere.com/ckfinder/userfiles/files/kijubezovigutu.pdfIn PDF document text
    • https://inks.bg/userfiles/file/20115453119.pdfIn PDF document text
    • http://pttaccounting.com/userfiles/files/26667092145.pdfIn PDF document text
    • https://tranhdaquyhn.com/uploads/news_file/nepizofijaxolinusafegojom.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/bidojawo.pdfIn PDF document text
    • http://turchifiltri.com/userfiles/files/76447408346.pdfIn PDF document text
    • http://rebeccaosborne.com/uploads/takiz.pdfIn PDF document text
    • https://pierreseche.fr/userfiles/file/befufekogiwanuzakerimo.pdfIn PDF document text
    • https://limadelimon.com/images/file/4988318890.pdfIn PDF document text
    • http://aristosaigonhotel.vn/uploads/files/47249576090.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=gta+sa+cheater+2.0+apkPDF 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_off0000d5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FE 17844 bytes
SHA-256: a8dc78d7ed1452fa630783da7d9953eef616a6fcd8269a496f214277eb7f5a99
font_01_sfnt_off0001047b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047B 10548 bytes
SHA-256: c830e6f4a4294d815c195442576530018917d78d576e6230e7308418236d37f0
font_02_sfnt_off00011cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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