Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7211803a79936d…

MALICIOUS

PDF

97.0 KB Created: 2021-09-15 23:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 70c1a8c075f48f80572f169b3c6e0b5a SHA-1: 34d57edd1401e30b7e9652fa315e740c81ffbd48 SHA-256: 0e7211803a79936da23f540bce2f35410f46f729a1616e9b2cb2dcf014377e7d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://drafthe.ru/uplcv?utm_term=the+brown+bunny+full+movie+online+123movies PDF link annotation
    • http://umffz21.ru/admin/ckfinder/userfiles/files/6360584540.pdfIn PDF document text
    • http://tgtech-auto.com/userfiles/file/riditilovi.pdfIn PDF document text
    • http://theonejsc.com/userfiles/file/kejebawukajaj.pdfIn PDF document text
    • http://importfoodfair.com/userfiles/image/2021/09/file/bojipozoge.pdfIn PDF document text
    • http://kraemer-duennebacke.de/files/file/74513573794.pdfIn PDF document text
    • https://hilanguage-com-tw.triangle-design.com/files/jonagake.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/pogewogigo.pdfIn PDF document text
    • https://www.caissedesecolesdu5eme.fr/backoffice/ckfinder/userfiles/files/92305452729.pdfIn PDF document text
    • http://tageedesign.com/ssmpt/documents/file/robiva.pdfIn PDF document text
    • https://trainova.com/userfiles/file/xisuta.pdfIn PDF document text
    • https://saglamahsapkutu.com/img/editor/image/file/58513265020.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eaf59e2fc3---9992508281.pdfIn PDF document text
    • http://archiwum.wyryki.eu/admin/ckfinder/userfiles/files/52100835360.pdfIn PDF document text
    • http://carrozzeriardue.it/userfiles/files/78280527551.pdfIn PDF document text
    • http://www.aunay-sous-auneau.fr/ckfinder/userfiles/files/naxivupipewawi.pdfIn PDF document text
    • https://safe-international.com/userfiles/file/wetapematobaf.pdfIn PDF document text
    • http://eis-pieschel.de/UserFiles/File/60567205907.pdfIn PDF document text
    • https://anitacalderon.com/ckfinder/userfiles/files/49296031497.pdfIn PDF document text
    • https://www.nbc.com.vn/ckfinder/userfiles/files/kobuxogemila.pdfIn PDF document text
    • http://studiotecnicobergamaschi.it/userfiles/files/27621680754.pdfIn PDF document text
    • http://www.77ice.com/upload/files/76604625533.pdfIn PDF document text
    • https://malashealthcare.com/userfiles/files/dimamabuzamos.pdfIn PDF document text
    • https://pasarangroup1.com/contents/files/vasajuvovetomiduwim.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001274e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1274E 20068 bytes
SHA-256: 4b11e6028e41b75cfe20c2ce55c6d1df19f28b84e2eddf7d0676af664ab7e8e6
font_02_sfnt_off00015c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C3D 11032 bytes
SHA-256: 34bb8cfa9f346fff706db2f1ef5582e748736b44697be936781118fab8490710

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