Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba92ee6367a4edd…

MALICIOUS

PDF

80.1 KB Created: 2021-10-11 08:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 4ddb7c226fd2769c0ff2455224174388 SHA-1: 0cadd1e5a4360e3e52c24da11c75947e032e835b SHA-256: 6ba92ee6367a4eddbd6bab2480bc966dd1993ab060f5cb2b2b7035a8051caf65
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to various domains, many of which appear to be part of link farms or hosted on compromised CMS platforms. The heuristic 'SE_QR_LURE' suggests the document may instruct users to scan a QR code, a common tactic in phishing campaigns. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://allytemp.ru/uplcv?utm_term=scan+to+pdf+ios PDF link annotation
    • http://mannaz.pl/userfiles1/file/56033374582.pdfIn PDF document text
    • https://nexusmediation.nl/files/kolireguf.pdfIn PDF document text
    • https://maxflowfans.com/userfiles/file/19981026453.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161534c7c69029---46958092700.pdfIn PDF document text
    • http://vinhthuan.com/upload/files/bosupodadorobatibefewuv.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/gilusakudurali.pdfIn PDF document text
    • http://www.coverseg.com/uploads/ckfinder/files/diletinon.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1615b9d990beec---57870011168.pdfIn PDF document text
    • http://kredoteka.ru/uploads/file/bavopuru.pdfIn PDF document text
    • http://dyglas.com/userData/board/file/74038598098.pdfIn PDF document text
    • http://happysmilecard.com/uploads/files/5573043807.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613265ffc4021---nulaxevewipufekunalom.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/161415ac11e3c3---lovijiwoz.pdfIn PDF document text
    • https://nepaltrekkinginhimalaya.com/assets/userfiles/files/36810955843.pdfIn PDF document text
    • http://alvitraders.com/files/jebuwepunisesote.pdfIn PDF document text
    • http://pradakshinam.com/fck_uploads/file/butipenofiwegezevubimi.pdfIn PDF document text
    • http://dunajecbiala.pl/upload/File/44866944823.pdfIn PDF document text
    • http://cgemfoco.com.br/ckfinder/userfiles/files/jejerilupajumob.pdfIn PDF document text
    • https://mgs-on-track.com/uploads/misc/files/takasavakunegokupexexi.pdfIn PDF document text
    • http://sumtinathholidays.com/admin/uploadfiles/file/duledamojonuzux.pdfIn PDF document text
    • http://el-master.ru/userfiles/file/sipisarirutogawaku.pdfIn PDF document text
    • http://metabolitplus.ru/files/file/40543908588.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_off0000d568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD568 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ed7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7A 17408 bytes
SHA-256: 95f5d2dd5c6fd0d46e84fb140c63a96c917f73cc3398935a1a2257b3e5b6ace3
font_02_sfnt_off00011b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B30 10408 bytes
SHA-256: 3c5402a8fc981632f437afdca35dbb2ac58d631904d62890d65dcf8c301afec8

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