Malicious PDF — malware analysis report

Static analysis result for SHA-256 883823d16bb2838a…

MALICIOUS

PDF

67.9 KB Created: 2021-09-17 00:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d5317d3efc5338fe104c6d6ae56d2583 SHA-1: 5d57264dc5e68035c38bd8bc0a24259ac278b222 SHA-256: 883823d16bb2838a428e46418074a0f48ab68ad2fc19836b873a72dd9f345b21
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, many hosted on disposable domains, suggesting a phishing or malware distribution campaign. The PDF structure and embedded URLs point towards an attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8156

Heuristics 4

  • 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
  • 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://irlanc.ru/uplcv?utm_term=latest+car+parking+multiplayer PDF link annotation
    • http://orikon.net/Images_upload/files/50461118067.pdfIn PDF document text
    • http://giaydantuongphongkhach.net/images/news/file/sanokenusirugarali.pdfIn PDF document text
    • https://lensprovn.com/ckfinder/userfiles/files/30860854576.pdfIn PDF document text
    • http://stroyindustry.com/userfiles/file/lededejikilamepuzituwa.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/dikimogazorasaj.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16140bda6b0876---jozodubafevajatulinuted.pdfIn PDF document text
    • http://toshiteriyakiburien.com/uploads/files/pimikufajaropibanuf.pdfIn PDF document text
    • https://dnm.tw/uploads/files/202109132155494299.pdfIn PDF document text
    • https://signos.larrialdiak.es/files/galeria/files/desoladu.pdfIn PDF document text
    • http://wwstationery.com/files/file/21674975693.pdfIn PDF document text
    • https://temahr.hr/files/6012242726.pdfIn PDF document text
    • http://hyunshin.net/userfiles/file/45897618589.pdfIn PDF document text
    • https://preciseenergygroup.com/media/lomotewukot.pdfIn PDF document text
    • https://et-auditing.com/userfiles/files/kobumowazisinemebuwar.pdfIn PDF document text
    • http://hsaltsj.com/uploads/files/morogo.pdfIn PDF document text
    • http://baoveantam.org/upload/files/33919921464.pdfIn PDF document text
    • http://gemwishrs.com/ckfinder/stones/files/90554675937.pdfIn PDF document text
    • http://3q1p.com/upload/file/210913052334664126gwke5n9xjzln.pdfIn PDF document text
    • http://azseal.net/uploads/userfiles/file/tozujadup.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16136b02729877---rigidibogitagusepuzatetis.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD848 18088 bytes
SHA-256: e0e182f926abf3228c146a3df47903bac5a6ea4ae328af1bbf799aa1e70f2403