Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a0d614db6d63a3…

MALICIOUS

PDF

237.5 KB Created: 2021-07-04 14:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 32faf97ef6820c5159fe4e8e1af4c311 SHA-1: e4a2e41396adcde7ae9789fe9c5a618869a86fbd SHA-256: 85a0d614db6d63a34be199120d1ed5c06ee89a83c2df4d100e9e54502fe4497b
166 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. The presence of an advance-fee scam lure, combined with numerous external links pointing to compromised WordPress upload storage and other domains, strongly suggests a phishing or scamming attempt. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering attack designed to trick users into visiting malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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://garglob.ru/uplcv?utm_term=most+poor+person+on+earth
    • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/guvikuvudumisopabat.pdf
    • https://alakharia.com/public_html/userfiles/file/32264705092.pdf
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/ib1ejg8pnp37p1r95bi7trp2q7/sefumotifutezazaxeve.pdf
    • http://georgekoldun.com/var/upload/file/99341709907.pdf
    • https://svingenieria.cl/userfiles/file/70873142016.pdf
    • https://hissekurban.com/resimler/files/dixukato.pdf
    • http://www.bufolari.com/public/immagini/file/tenikulatarukizulafo.pdf
    • http://citescolairedeledit.com/include/file/bepex.pdf
    • https://alutat.com/data/file/11044873060.pdf
    • http://dabaizhongxue.com/upload_fck/file/2021-5-25/20210525084507989196.pdf
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c4d88a09b---93062448816.pdf
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606feae4ca32d---3759758005.pdf
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/01ddfc8f942cf1e0fe1dc7ecf259ba5b/fetotetoteni.pdf
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210612083433.pdf
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/niqrqnjhb2ev0tiinen062omf7/woxamavopixok.pdf
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e13cebd039f---62841725257.pdf
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b68bedac2---manokufupugegobu.pdf
    • http://brilspa.ro/userfiles/file///12842803051.pdf
    • http://banglatalkies.com/dynamic-images/cms/file/fiwusujiditulosofosenoxir.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adad5bf0201---78877285969.pdf
    • http://ya-ke.cn/admin/upload/86879343468.pdf
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/93bf23e4174243a6428d55152bb10f5b/kudeziduwebetosawefoto.pdf
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/bf8927a05eca421268582750df91c042/63387098655.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_off00034b7d.bin
5863fe62e38cd2e1c4a76f5c2de1adf6aa0e9552587a9d19cdc75c49879aa4df
pdf-font-stream PDF embedded font (sfnt) at offset 0x34B7D 10204 bytes
font_01_sfnt_off00036258.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x36258 16792 bytes
font_02_sfnt_off00037a6a.bin
9426d42533a8fecec14f9ab127ddffed9772fcd772c4dbc389574e83bec71399
pdf-font-stream PDF embedded font (sfnt) at offset 0x37A6A 17496 bytes