Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0ee7267600bc18…

MALICIOUS

PDF

241.8 KB Created: 2021-06-26 04:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5e26d1b387c2f3c53f57d3ad5b64e016 SHA-1: fe2cef5535e76c846792aee3ba2d2aed2941e8d2 SHA-256: 0a0ee7267600bc18da8cfc0d9de9f721e84cd544752589b177dfd5debb001164
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous links to external sites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The 'urgency lure' heuristic further supports the phishing pretext. Although no scripts were explicitly extracted, the PDF structure and embedded links are typical of documents designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

Heuristics 6

  • 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.
  • 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 http://unipsyclinic.com/userfiles/file/20210605135352.pdf In PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/6bc13e12bba10760e3b53ebb9d4506f0/zedir.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/ed61ab5a7d11a8c53306ab68193dd8ff/xewoduluge.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/tta1uc3ce7fdu750g1pdb1gfvn/4554014154.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/175cfc8f79e82a5a848950877c7301e0/jodebanitiwemufunipofav.pdfIn PDF document text
    • http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a55c63dd1e---5400042529.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc44c41cce---vuwav.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7c197a984---61161777823.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160adeb801f85e---76519021854.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf3be31cd7d---rejojubagu.pdfIn PDF document text
    • http://videofilm-tv.ru/content/File/1219274049.pdfIn PDF document text
    • http://www.psoealora.es/ckfinder/userfiles/files/18614661895.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/dc4bbb6fb0708ba383da35d0bef28528/81228954569.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d4301cb4a1---womabigujenawisoxexoda.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160aff9818db17---79206261057.pdfIn PDF document text
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3bb846013---pafizax.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16078377496654---vanawopefapepafomej.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/39b3764691d92ae5d3ced0d775f5a406/37332887888.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160883fa17af76---47525974006.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/lufokise.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609e07664741d---pejomozupinakon.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bf927943ffb---33418443538.pdfIn PDF document text
    • https://bancodevida.com/bancodevida/admin/images/image/file/torumegidi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=a+mental+imagePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00033672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33672 23828 bytes
SHA-256: 15f18c9655b664870d9f488eb26a41a894429f12fdfb716e2443531b5c7018ff
font_01_sfnt_off000370fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x370FA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00038907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38907 7404 bytes
SHA-256: e298b437848619bae3066feb0cd6a416a7308c9c94690744f3225028ffea0d20
font_03_sfnt_off0003a145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A145 10044 bytes
SHA-256: 4e7e451b84f8d8c3762e8f4eaba08b211204036ec73133d7e815bf08c8b6aeee

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