Malicious PDF — malware analysis report

Static analysis result for SHA-256 866b5d10951cddec…

MALICIOUS

PDF

150.8 KB Created: 2021-07-01 18:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3306f457febdc412d7b3babc79665d29 SHA-1: 8c55612548a8b0d464181ff31e7b1fd1f1cafd43 SHA-256: 866b5d10951cddec3d0e49142e163180ee7e4a801ee416be4b592f53605e7886
196 Risk Score

Malware Insights

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

This PDF is classified as malicious and exhibits characteristics of an advance-fee scam, luring victims with promises of prizes or funds contingent on a delivery fee. The document contains numerous links to disposable hosting and compromised CMS upload storage, suggesting an attempt to distribute further malicious content or phish for credentials. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://joyearland.com/ckfinder/userfiles/files/limupakutogin.pdf
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/de04b38c7b92d1e95645f6e5e32671ee/diruna.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16097fdf28291e---27737649079.pdf
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/db6735436a278490435ad6ce7b12eefe/67886199144.pdf
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/tq4di99bc3a5vu1m39bnr8sqc4/tefegawuzagexe.pdf
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607afa875fe90---mujikes.pdf
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609b273980d37---firepu.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160b3870eb7519---nuvegevosazipoxiguru.pdf
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b35d5f0e38---40203048135.pdf
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/84098fdaf0ec5b9b2245de024b6c1899/kuvafumaludiginivaxal.pdf
    • http://busankid.com/webfiles/board/file///77160950523.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/26b77793f37078fb6063f609d7f32866/vudar.pdf
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/k8a6eop8nkguhbpr6s82jn0ci4/goxomafilujedisoto.pdf
    • http://firegallery.ru/img/upload/kipalubaxaranom.pdf
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/0f2a8b5ec1b9a5c31a8ba37eb7f19004/53411714459.pdf
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/350e155db10d8e7bedbf9e3d0a0bb39b/febusojaku.pdf
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/b17399a08232b1fff0898d62ccfa14b7/wofevabetiluf.pdf
    • http://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/rezasepejaludinefizetem.pdf
    • https://seikico.net/img-tym/files/8152589039.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/6a72cde53e376f524c3ab9dcfefc0b32/93068897723.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=csc+vle+insurance+exam+questions+and+answers+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_off0001ead0.bin
964e1059aeed4742626f6c57fa4c1f27649c66acede0a9e3a8291f785f91efdd
pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAD0 18260 bytes
font_01_sfnt_off00021adb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x21ADB 16792 bytes
font_02_sfnt_off000232f2.bin
05779c6bf4fb2188d1b24621583dbac04f2c4921b5766eeb98efe2b9f4c53992
pdf-font-stream PDF embedded font (sfnt) at offset 0x232F2 11312 bytes