Malicious PDF — malware analysis report

Static analysis result for SHA-256 61c3651ebe0e0262…

MALICIOUS

PDF

85.2 KB Created: 2021-06-30 02:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a75e7f3b2b48fd60a70ec0064b980ece SHA-1: c8e875d9172dc14d55a1839a73cde29d805b36a8 SHA-256: 61c3651ebe0e0262be150eaf87635edf86def8c01d07681505161006042e62f6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics as a malicious advance-fee scam lure. It contains numerous links to external PDF files hosted on compromised websites, suggesting a phishing or redirection campaign. While no scripts were directly extracted, the presence of external links and the nature of the lure indicate a likely attempt to trick the user into providing sensitive information or making payments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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
  • 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.
  • 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.
  • 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://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb3dee0441---74332951594.pdf
    • http://alrabbancapital.com/file/files/bofarokob.pdf
    • https://djennebeads.com/nbloom/fckuploads/file/28333650086.pdf
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a954249803c---40605214227.pdf
    • https://bettyloupaints.com/userfiles/files/78766298669.pdf
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/q1qm33qoi43o2odn87pq4vumph/51358866817.pdf
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//99536188000.pdf
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/4e45945c64f0e648fa98a392e30a867b/zusixidom.pdf
    • https://travelinnsuites.com/nbloom/fckuploads/file/66004580734.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf45e285aae---79471653636.pdf
    • https://smallislandcurry.com/wp-content/plugins/super-forms/uploads/php/files/7daa7cc04b1d193ae443000bd14155e3/88546729754.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/v0b86eee6djvrrptv6fho592a1/94290961800.pdf
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086bdffcd09d---rugojinefiriwexulevepujud.pdf
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/5b1c55ce66214f85ccd83a20470e1893/nafezibunugutegukevigife.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c977198d924---nuwaxinofozo.pdf
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/d07f8f5a9eca491a9de362c2429248fa/kunutidi.pdf
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/5bdd6422c14c7963a10b70aa99c5f9e3/loxuwimetex.pdf
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/dc6e8c8d10e731d3fe7a767a08dd8fa9/38298108118.pdf
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/pga79se2t6jkahrt77aso0sfcv/77991317427.pdf
    • https://associazionedynamica.it/uploads/file/22796399548.pdf
    • http://xn--80aab8aioy.xn--p1ai/userfiles/file/58913846819.pdf
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/girekodudesifelozopixov.pdf
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0585aae101---wifoginaka.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=sire+sungha+jung
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8aa.bin
c7c721d7b765896fd667abc35098765f073b404abde4018c0efb9cc5702f0ef4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8AA 1924 bytes
font_01_sfnt_off0000d17c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD17C 16792 bytes
font_02_sfnt_off0000e98e.bin
a0fb64eda3f58dfe7ff133becc7d5ff231a598c68b9a7859fe553a9f490f669b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE98E 18304 bytes
font_03_sfnt_off000118a5.bin
c2236e3602da3600f2252356181a3a93592f4d115b3e6b54db4f17f211e542cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118A5 10428 bytes
font_04_sfnt_off00013016.bin
f0fe38d53df2ce3c228211e06f06f1f94e2995311f45ce30f4c3b58f390b1dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13016 16460 bytes

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