Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84eacbbc4f7661d…

MALICIOUS

PDF

98.7 KB Created: 2021-08-06 17:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 943e1141fbce99baada4432b8d506d24 SHA-1: 7fef3397b3a8fc09629c5dc53a7cdaf9b6c358b0 SHA-256: e84eacbbc4f7661d2d119b8506aa7d204ec1577988e17f4927fefaf93ee24b29
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many of which point to compromised CMS upload directories, suggesting a link farm designed to host malicious content. The presence of urgency and callback lures further supports a phishing or scamming intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

Heuristics 8

  • 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.
  • 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.
  • 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://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b3861f835b1---91369329586.pdf
    • http://internationalnetworksolutions.net/files/
    • http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/49175201812.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609871176aee0---25033750293.pdf
    • https://prospr.fr/ckfinder/userfiles/files/70029053267.pdf
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/723248bd74b860e34163c38303ada02e/biruwub.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab8c06a673f---jafob.pdf
    • https://a2designbg.com/userfiles/file/toxorikodaj.pdf
    • https://ajitcoatings.com/uploads/95325338716.pdf
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/5336685eb98eb8121a197dd341e135ec/16605764743.pdf
    • https://www.leasing.net.in/ckfinder/userfiles/files/64672359533.pdf
    • http://carbontuning.ru/file/gevofised.pdf
    • http://kesifveotesi.com/files/19740455713.pdf
    • http://maroba-zirndorf.de/file/59537242702.pdf
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/ginirewalafevadirime.pdf
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/1hr95rvqu3a51075m9u3bngs00/ditexaxunuxuvojanalukut.pdf
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/8cc6ffacafcd1e7e4ecea2f35c9ee9ad/saridoxamerilifumig.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079e97e864fd---zabevuduwikusepomezofozu.pdf
    • http://icmasistemas.com/userfiles/files/14372958522.pdf
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1607efd47dd953---vegatinakipofavomelenazaw.pdf
    • https://accuratesearch.com/userfiles/file/kujajuj.pdf
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/dedisodefotipevogoxumukir.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/ubh95slh46l01knen9j2v8k177/wuzepuwanolikekalogavazuw.pdf
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/161050ac834ce9---72510293167.pdf
    • https://travelone.ae/userfiles/files/75626236160.pdf
    • http://shortguycentral.com/ck_uploads/files/foreferovimapu.pdf
    • https://altinhediyeler.com/calisma2/files/uploads/1740637880.pdf
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a49a95b36---pilububuwizifabatowarokiv.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=robbins+and+cotran+pathologic+basis+of+disease+9th+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001171d.bin
9be017fc3038b1fb6fc18908bc0be809f6c57a16b4345a471acdafd48ac3dc43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1171D 18736 bytes
font_01_sfnt_off000147d3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147D3 16792 bytes
font_02_sfnt_off00015fea.bin
e19354208c76e552061312c27f20968dfd3b7722b1736cf42176b52aaec47c9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15FEA 11252 bytes

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