Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62fee353c56867f…

MALICIOUS

PDF

89.3 KB Created: 2021-06-30 06:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 66cbe02039081a51d9add4116a4658da SHA-1: e5a1d17e52efd976ddfb9feb575c412f5e8e7df1 SHA-256: b62fee353c56867f3dc05f8b2919915e9ad8aec60ca97d2d19a898177bab1c2d
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious and exhibits characteristics of an advance-fee scam lure. It contains numerous links to potentially compromised websites, suggesting an attempt to redirect users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://alarcon-v.com/editor_upload_image/file/17256616998.pdf
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a95ddcc31dc43cc3e3726c9f07c562d5/31369620577.pdf
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/cc9664b36e4e5b8a09dc0ba31d81583b/goxiluriduzudituburi.pdf
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/b34f7ce8ae4cbfc3548ecd08a2da545d/wisuvomuwuxivapuse.pdf
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/1a33ad6ad4e682e34798e39f3213b4cc/48818075821.pdf
    • http://www.urbanwaterways.info/files/2019398922.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608529b98ff55---xujoja.pdf
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/1d5c703f3dc0abccbb9a9071a7cbcb72/80320898000.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a897e7bc2---vufifukosigirotivim.pdf
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/ucqs6mipq1a5t645tdspta0f9f/karegiteriwolorajaze.pdf
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/f538372a612ba0509e4bb383731d2465/39511454274.pdf
    • http://guides2alpes.fr/uploads/file/79765252898.pdf
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607775f51456e---99871198740.pdf
    • https://tiklatakip.com/calisma2/files/uploads/tapizijovafog.pdf
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7cbe5db399---8253944827.pdf
    • http://bensonlandscape.com/editorData/file/26936711625.pdf
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/3n70eqo0qk1ji42aa33oc0dt9f/83443966067.pdf
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/ckc6ct9rm6ja5bvp6vq41alite/duluzolakadozufoba.pdf
    • https://calmoinc.com/upload/editor/file/dolofowulifamibosekonalu.pdf
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab47bb8f6b5---59337134081.pdf
    • https://trellisdundee.com/wp-content/plugins/super-forms/uploads/php/files/46d8adec8f3e18f5e151fa38bd67f28b/gidelulirigimu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=personal+opportunities+and+threats+examples
    • 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_off0000f5ef.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EF 16792 bytes
font_01_sfnt_off00010e01.bin
5e4363e061a0922d32550b2e543e0d53ea791f799b6a6afc2b9ed0283c5b7432
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E01 18540 bytes
font_02_sfnt_off00013eeb.bin
66b8a600b3fda200540f5227b3bd66d091ad0e97d60b973780762d9db5535dae
pdf-font-stream PDF embedded font (sfnt) at offset 0x13EEB 10860 bytes