Malicious PDF — malware analysis report

Static analysis result for SHA-256 80185714579d4eae…

MALICIOUS

PDF

84.8 KB Created: 2021-09-21 23:36:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: f918a4f4ad5e9877ac1633b45a3df03f SHA-1: 2d3985aecdcfff21565f4fd64beb7677b59ff66e SHA-256: 80185714579d4eae530db3688b3b913796a3b577ba059d011e793768b9d278eb
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 https://laborke.ru/uplcv?utm_term=the+seven+main+aspects+of+god+emmet+fox+pdf PDF link annotation
    • https://kga-am-adlergestell-ev.de/kga/ckfinder/userfiles/files/15841279565.pdfIn PDF document text
    • https://halkapsikoloji.com/userfiles/file/toririzazudiferebetu.pdfIn PDF document text
    • http://tangneylaw.com/admin/images/file/wumixoledajijodasafujimod.pdfIn PDF document text
    • http://pokemom2.com/uploads/files/80319036225.pdfIn PDF document text
    • http://www.fashiongale.ro/userfiles/files/63793892753.pdfIn PDF document text
    • http://tolaniprojects.com/userfiles/file/bijupamovalin.pdfIn PDF document text
    • http://mazraeir.com/images/upload/files/18332583467.pdfIn PDF document text
    • http://rotarytattoomachine.co/project-new/christianbook/upload_images/file/sewewosanugitasek.pdfIn PDF document text
    • http://serenetour.com/image/upload/File/59202930991.pdfIn PDF document text
    • http://sigmabhp.pl/userfiles/file/kigebuwo.pdfIn PDF document text
    • https://astdubai.co/userfiles/files/27722125750.pdfIn PDF document text
    • http://ingfrimale.com/userfiles/files/zisuvabipezuf.pdfIn PDF document text
    • http://guerrazzi.info/userfiles/files/fipuf.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/54577960053.pdfIn PDF document text
    • https://konteshamamotu.com/userfiles/file/pusevarox.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16138a29515f7d---77888366833.pdfIn PDF document text
    • http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/77515166037.pdfIn PDF document text
    • http://sun-green.be/ckfinder/userfiles/files/wafarorajekileb.pdfIn PDF document text
    • http://zekejozsef.eu/FCKfeltoltott/file/58434672642.pdfIn PDF document text
    • https://ksi-system.pl/editorfiles/file/55533133522.pdfIn PDF document text
    • https://derechosenred.org/aym_image/files/95729273286.pdfIn PDF document text
    • https://schachverein-marchhoefe.ch/fcsr/news/upload/file/4778076124.pdfIn PDF document text
    • http://nicolalazzarotto.com/userfiles/files/8601990179.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

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_off0000e45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fc73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC73 11052 bytes
SHA-256: 1ed4bc7d738f49841c6e6f63348e883c88ba22ef6a7e13d19ea394c364ec6e89
font_02_sfnt_off000115d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115D7 18208 bytes
SHA-256: 4d7a711408b4b33a41520ab88e9d0ced8b6f34387342a9d82d01e3d0aea4e8db

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