Malicious PDF — malware analysis report

Static analysis result for SHA-256 674906a01bee660f…

MALICIOUS

PDF

74.7 KB Created: 2021-02-14 17:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8eb6ee197e5536a7371f19385f372897 SHA-1: 1be471a66ed38aea8bd8e4f02fa1de11d29c435e SHA-256: 674906a01bee660f808a89074de7f3d50e5239167a4d639bb0d5aefe3bd7530f
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple external URIs, including one pointing to 'seumenha.ru', suggesting a phishing or malware distribution attempt. The PDF structure and heuristics indicate it's designed as a link farm, likely to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/wix?keyword=certified+copy+of+marriage+certificate+florida+duval+county PDF link annotation
    • https://cdn.sqhk.co/jigavozef/fhbgghb/radio_stations_italy_online.pdfIn PDF document text
    • http://goodsfor.life/sewasapedevovababafi1fnf3.pdfIn PDF document text
    • http://xamagexezuloku.iblogger.org/tizova.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/kekimozapupipk1mso.pdfIn PDF document text
    • http://gmetry.online/cattleya_percivaliana_ouro_cochanobioao.pdfIn PDF document text
    • https://munowimil.weebly.com/uploads/1/3/1/4/131406650/0e16b328f.pdfIn PDF document text
    • https://welerenumabo.weebly.com/uploads/1/3/4/4/134467224/e8e85656e9.pdfIn PDF document text
    • https://cdn.sqhk.co/nipigagavadu/icGGjgY/awesome_viral_videos.pdfIn PDF document text
    • https://tojuxumisadef.weebly.com/uploads/1/3/4/7/134714483/1623744.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/5929e614b.pdfIn PDF document text
    • http://cleaner-inn.club/potevazoxujajivumulifofawktz3p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/film_bonnie_and_clyde_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/fovimebugusu.pdfIn PDF document text
    • http://wabipoxagapez.rf.gd/nanejas.pdfIn PDF document text
    • http://jodewejuwuw.epizy.com/nebixukasorad.pdfIn PDF document text
    • http://sazerubewufuzuk.epizy.com/95821281203.pdfIn PDF document text
    • http://feselipalez.epizy.com/33785108130.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE726 5364 bytes
SHA-256: 58262757750fd9595afb16b07478f841d8162c3f276ea1950881af272d449151
font_01_sfnt_off0000f961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF961 10492 bytes
SHA-256: 9214c4bf1374eed96234a9be6f9aec214a48b2ea079b47dbb0467c80a1bf327e

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