Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc9a84f5dae0af4…

MALICIOUS

PDF

82.5 KB Created: 2021-08-16 12:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5c47e369c5e7b62cd80c06d4cac9fa18 SHA-1: 72be92f150f27c544265e391fbb137129d4a8f97 SHA-256: ccc9a84f5dae0af484b69517399c64d18189fcb12ba1a3bb263fcb3434175138
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous embedded URLs pointing to potentially compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of invoice and callback lures indicates a social engineering attempt to trick the user into clicking the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://pixomot.ru/uplcv?utm_term=anambra+state+university+post+utme+form+2020 PDF link annotation
    • http://esoftland.com/userfiles/file/zeperisev.pdfIn PDF document text
    • http://eltonltd.ru/sites/default/files/uploads/mofebopasitujipopo.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f73a39b06---burebokovuzopexuxixuzad.pdfIn PDF document text
    • http://lovesenergy.com/file/tamitamopajixumavugali.pdfIn PDF document text
    • http://pantipplaza.com/userfiles/file/nozedot.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c109930f6d9---posogikifoxigiko.pdfIn PDF document text
    • http://groupkaishan.com/d/files/12042730500.pdfIn PDF document text
    • https://homeuu.biz/upload/ckeditor/pages//files/3863548174.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afb631bc159---xaraxapekot.pdfIn PDF document text
    • https://etimes.mn/uploads/files/18657182475.pdfIn PDF document text
    • http://imhyuk.com/imhyukeditor/userfile/file/diliwitujuz.pdfIn PDF document text
    • https://easresidence.ro/app/webroot/files/userfiles/files/64773387498.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/iv98dse8bi14vgbrp66bst9tp5/70338757422.pdfIn PDF document text
    • https://termofriz.rs//files/fugofa.pdfIn PDF document text
    • https://4of100churchstreet.com/assets/media/files/zejenovefaravuluxetexo.pdfIn PDF document text
    • http://psychanalyste-gard.fr/ckfinder/userfiles/files/63096913780.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b38eecec5a0---nefidubebutawelukato.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/latonezorute.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_off0000dd6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57C 17380 bytes
SHA-256: a07fa8397113daeb2408c2a3ae71e001ea9ab92e570d8bc1f2226709d76eb517
font_02_sfnt_off0001231e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1231E 11116 bytes
SHA-256: cb2c8cbfeded8f5232b5152753b6fc5f115587ce2f037ec662f8de15e1acfafa

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