Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92bf4c599f75ace…

MALICIOUS

PDF

89.6 KB Created: 2021-08-05 00:36:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 96386baca0cf54885d22cf3cb4ba9956 SHA-1: 5caa2aabc7c579c9d9ff304c9df97d2ca010ead3 SHA-256: d92bf4c599f75aceb24f549067b7601c9f4fbe10329221925f160691714e9076
196 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, luring the user with promises of a prize or lottery winnings that require a delivery fee. The document contains numerous links to external PDF files hosted on various domains, suggesting a link farm designed to distribute malicious content or phish for information. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://mudraconsultancy.com/uploads/files/datifijopokufilepexisut.pdf
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/fd1c8a316293b355c9f347a266c6cb6f/91301799414.pdf
    • http://beveragesgs.com/userfiles/file/61501192932.pdf
    • http://rialta.ie/userfiles/files/jejarilupirokesonuxu.pdf
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/7e74ff3e5e0b63ad6d00662489674073/76415385272.pdf
    • http://asremajazi.com/uploads/files/kigotibelewibutelabozum.pdf
    • https://daismene.it/file/50924550164.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819b6465aaa---12118133078.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/3q8pec6vnk4sqad1avh8k997m4/27312995364.pdf
    • http://accessiblevehicleservices.com/userfiles/file/mawokapasuzowubukuwovuf.pdf
    • https://schlosshotel-murten.ch/userfiles/files/tepudi.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b07f36be664---rajezusasapakedo.pdf
    • http://geose.ru/userfiles/file/31196241115.pdf
    • http://elijasprojekts.lv/files/file/wesan.pdf
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/ef58f92ffdf89a16f6627ebb34cc3f99/72175610969.pdf
    • http://micronforgacsolo.hu/UserFiles/file/ravaxajulevifesezelu.pdf
    • http://thestarbusan.com/FileData/ckfinder/files/20210707_DADC091D283102E4.pdf
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/c1e93966806a0b48c36ce83c3616c2c4/katedisokuvogigopunix.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16099b81dc9621---31849172217.pdf
    • http://incoyun.com/calisma2/files/uploads/vatomuvi.pdf
    • http://hondatayho.vn/images/ckeditor/files/fudav.pdf
    • http://ibookingkr.com/FileData/ckfinder/files/20210716_A0074ADF2A4F2146.pdf
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/c36820fefa14f0ecec4086a290f037c8/18067914551.pdf
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/ke20pva478m5p0jogdgn6qjaa0/46042839891.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=guide+dream+league+soccer+apk+dinero+infinito
    • 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_off0000f50e.bin
8dd5d0e687a291e7bd04a238ba95d95b3acd70d62cb016b12a294d02a19c3d5f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF50E 11196 bytes
font_01_sfnt_off00010f08.bin
e53fa72cccfac466e54ddf61d605243ed9fd032ed91e5cd148cdb6c2ceb3d967
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F08 18264 bytes
font_02_sfnt_off00013e41.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13E41 16792 bytes