Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee054d7ea5e95727…

MALICIOUS

PDF

89.7 KB Created: 2021-09-01 20:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 96ee8e377134601517a9c794f8ea6413 SHA-1: 84060888b862e3f45634f20d3f59d8f91d511d5d SHA-256: ee054d7ea5e957279cf966277e8908265f571cd680bc1b62a9c85732d76a4f89
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of urgency language further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://parfumzone.ro/files/file/56222425588.pdf In PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/cbb42e488d4583b1426f8deabfbbd0eb/3997281950.pdfIn PDF document text
    • https://marwaautorepair.com/nbloom/fckuploads/file/vupuzusofobexomaro.pdfIn PDF document text
    • http://xn--80aafbanafwvcftiqfecrg2a.xn--p1ai/pict/file/letojurotujazikoxowufe.pdfIn PDF document text
    • http://drthchowdary.net/userfiles/file/59976367174.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-5-5/20210505072044999596.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609a7262f329c---43891838579.pdfIn PDF document text
    • http://sreema.org/FCKeditor/file/dawezutimivizite.pdfIn PDF document text
    • https://badoza.net/userfiles/file/nabuxusuzafalibijapor.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607540be350e3---70965380679.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/3702a4563497ef358aa0294e450a4879/xazovoruviratixe.pdfIn PDF document text
    • http://amandamaitland.com/images/file/59309305520.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/2746c98272d8d76f3bdb7cbbc8f48287/99922209648.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/24d15e217f5fea780ce398d5bdabf2a8/zezesetabejoju.pdfIn PDF document text
    • https://protectname.xyz/whoisprivacy/userfiles/files/zuzeronosowujex.pdfIn PDF document text
    • http://ttlh.vn/storage/ckfinder/files/82414024802.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/ae3ikfs89jv05ei0oll741vf88/zarewimigugilodedidizunu.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0cbc02f87---vuzabatejejezezotakejon.pdfIn PDF document text
    • http://homeshopeez.com/uploaded_files/userfiles/files/sowalabuzusarikusazaroni.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/c72fe0b61f06e6ed9ae8725fc4391df3/64467672717.pdfIn PDF document text
    • https://palezieux.com/ckfinder/userfiles/files/nujunitel.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/3389d34a8d90d5be355b444b04283f6c/23795219775.pdfIn PDF document text
    • http://xn----9sbkvfu2aex3d.xn--p1ai/ckfinder/userfiles/files/xezikosojoputejujus.pdfIn PDF document text
    • http://cainghienbinhduong.com/uploads/userfiles/file/fuxifijorebazifosukixi.pdfIn PDF document text
    • http://vhz.cz/user-files/92653539326.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609225365bc86---bijopavijawepanox.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/files/files/78582269027.pdfIn PDF document text
    • http://ilturismoinitalia.it/userfiles/files/90280040180.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=fly+that+lays+eggs+under+skinPDF 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_off0000fa7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11291 10688 bytes
SHA-256: 3b398c1acbd1ad572323904b30f12707098cbbff6bd77cc5d24700642b7882c0
font_02_sfnt_off00012ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACE 17480 bytes
SHA-256: dcaf4ffd27cd39d685ccd1b8e518f5534f77775f737343d163575f1bd31e99c5

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