Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede25e8641a00d49…

MALICIOUS

PDF

75.5 KB Created: 2021-09-09 12:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 5bc1a0736545ad3c0d49c16b3e78d1f0 SHA-1: 23365671ac224d976e6d53c03542eda938548ee0 SHA-256: ede25e8641a00d495ce5c789e57fc70c5ec307c5c9115dfd83d0e6a233b139b7
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many of which point to potentially malicious content or phishing sites, and is identified as a link farm on disposable hosting. The primary function appears to be directing users to external, potentially harmful, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613828fa084e6---37056827073.pdf In PDF document text
    • http://toroisg.com/public/images/files/97827539662.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16136b67ff323e---zulunibop.pdfIn PDF document text
    • https://imotrading.com/images/userfiles/64799782934.pdfIn PDF document text
    • http://jandebruijn.com/uploadimages/files/wedix.pdfIn PDF document text
    • https://sabresources.com/FCKuploads/file/wexixituvizigosakupuj.pdfIn PDF document text
    • http://sinners-party.de/media/file/5880014281.pdfIn PDF document text
    • https://panificioilcavaliere.it/userfiles/files/58836112333.pdfIn PDF document text
    • http://konakelektrik.com/userfiles/file/48353144476.pdfIn PDF document text
    • http://www.lbtfilm.com/uploads/files/nasitugowo.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/gobezatoj.pdfIn PDF document text
    • http://ducnhua.com/upload/files/10764143886.pdfIn PDF document text
    • http://nhungbaithuocnam.com/img-tvdl/files/xifazenexozowurodofe.pdfIn PDF document text
    • https://tl-systems.hu/files/files/xepur.pdfIn PDF document text
    • http://eiffelflowersquesnel.com/userfiles/file/zivipojalopobowolepukesan.pdfIn PDF document text
    • http://suaups.net/userfiles/file/kilijulelonaragalujive.pdfIn PDF document text
    • http://geoscan.it/userfiles/files/8553776806.pdfIn PDF document text
    • https://mabuksusu.com/contents/files/nomidejeripezikutali.pdfIn PDF document text
    • https://hizlipin.com/calisma2/files/uploads/zewap.pdfIn PDF document text
    • http://jngf.cn/files/file/91476792401.pdfIn PDF document text
    • http://marjoleintje.nl/include/userfiles/58307351497.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=raabta+song+download+mp4PDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC298 10760 bytes
SHA-256: 03d323a511fcaf4f003462d61b809d02162f13e432449738d549e89269570a08
font_01_sfnt_off0000db06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB06 17636 bytes
SHA-256: 3e854fc94df18a69ff7bd8e7fa647e65c79fb13cd59a77f59cede4ecb6171136
font_02_sfnt_off000108d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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