Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e55da5a74827c5d…

MALICIOUS

PDF

93.0 KB Created: 2021-06-27 07:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 42c18016bbaef41b4fa80943ebe29c83 SHA-1: 3e517e14a0edd29083f8be7e86e4f62969f8171b SHA-256: 5e55da5a74827c5db095ff5d324cacd3fbcefd7c922da72d4f1d3ba15920182f
196 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML models and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links, many pointing to compromised WordPress sites, likely intended to redirect users to malicious content or phishing pages. The document's structure and content strongly suggest a lure for financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608904c78a0e7---dozemum.pdf
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/eb7684526b8d68a72fe9386c4064a6ec/62098583312.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/hcvcu4hcv804am1g2chfd1na52/nasomofe.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084c16482380---nivufirevenev.pdf
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094b3a416ef6---85477879557.pdf
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/c6e60ab2e0a4eba1a467745d9796897f/21861297903.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/0ed10b3a8ab17d0bf272316178b56e81/ralebu.pdf
    • http://tcurryproperties.com/konadnew/userfiles/file/jorakis.pdf
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a0e694ece8d---dagogududobejivan.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/r1r0k25cm5q9rvaf3kbui17ljf/sitedopedolip.pdf
    • http://goteneplast.se/files/images/file/pudunanamesexapasewiwugi.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b64285ea592---bunigovodisiwa.pdf
    • http://madiagranitosilano.it/userfiles/files/kidekozozavetixovugege.pdf
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f40075b4f---69264302650.pdf
    • http://aite-materials.com/upfiles/file/49664784384.pdf
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cdda6cf54---tovimi.pdf
    • https://behbehaniprojects.com/uploads/files/daloxozojobupirewiwi.pdf
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16089b36f9cc85---89716763663.pdf
    • https://smartcirclegroup.com/userfiles/file/75780615694.pdf
    • http://akinmedikal.com/uploads/file/78407690527.pdf
    • http://a-kamen.com/userfiles/file/8281935604.pdf
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607f857d155c7---wozelivuxelemirodase.pdf
    • http://islandpointfl.com/userimages/56300912062.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=words+that+have+6+syllables
    • 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_off00010099.bin
aa093282b35f30fa8434dec6ddfe12950ba6fe41ffcf19c39cdc084673a5f801
pdf-font-stream PDF embedded font (sfnt) at offset 0x10099 23220 bytes
font_01_sfnt_off00013494.bin
e6668093f3414cff11ccde505541b2759b89fc100260a726e74d8d160b06e83f
pdf-font-stream PDF embedded font (sfnt) at offset 0x13494 10632 bytes
font_02_sfnt_off00014d26.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14D26 16792 bytes