Malicious PDF — malware analysis report

Static analysis result for SHA-256 594a463118a6967a…

MALICIOUS

PDF

196.2 KB Created: 2021-07-26 01:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eb92ec8bbf5fe8363abf2475578c9fb3 SHA-1: 34b9057f04d2c6dfcdad66abfef3ad8f0d31f637 SHA-256: 594a463118a6967a9a8cef57b3bc2514fd144ebdb3579ed65ead766d56b14f25
206 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The heuristics indicate it is an advance-fee scam lure, likely directing users to download further malicious content from compromised WordPress upload directories. Several URLs associated with these compromised sites are present in the extracted evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.
  • 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://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087eb5566944---57525680578.pdf
    • http://lubrifianti-auto.ro/files/file/67276843533.pdf
    • https://flexrocksrollovers.com/wp-content/plugins/super-forms/uploads/php/files/o19jv3jsfbclbsb51dj4arrlcd/40413998463.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607588d998399---jipitege.pdf
    • http://thumpamonpally.com/userfiles/file/97486326640.pdf
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/bcbd5e01bab4c0bf3c06f7fdfbb5578a/81154344054.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/98j4c77d9edbf2tf6vcmdh4h25/82160701458.pdf
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f60b99bc3c---80514780285.pdf
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16088607bd5422---54785913563.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/99ae0b074d5b3e79e75643e0391364f5/laletuxe.pdf
    • http://cybernet.asia/UserFiles/File/84644718978.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d4f975ng6cr51p454p5uhpkj30/97498605096.pdf
    • http://dlmberatung.ch/userfiles/files/refiruwi.pdf
    • https://eminencesolutions.in/resources/userfiles/file/63443484542.pdf
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/23b876475042b6616e0c05c67741506e/30992361982.pdf
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/b10pc8t62m6gqjpnl5dmmb893d/woxare.pdf
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c223bd6309e---89706629150.pdf
    • http://deltools.com/userfiles/file/dozam.pdf
    • https://doganagolosa.it/file/jarupopekuwema.pdf
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5bf019d55---rudofuvobe.pdf
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/a9678bb8059675a0e9c395ac99dff261/97176312184.pdf
    • https://bravo-hk.com/userfiles/file/dupiponafixupuwos.pdf
    • http://jhdljz.com/userfiles/file/1625212557.pdf
    • http://cooleywestbrook.com/clients/865832/File/sutisopowalatirep.pdf
    • https://www.americanapi.com/wp-cont
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=the+louisiana+purchase+webquest+answer+key
    • 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_off00029de1.bin
73a0fd1f549c42370a7312ccd0e06f65d2725b38cf0772ca844fffb89ba7e87b
pdf-font-stream PDF embedded font (sfnt) at offset 0x29DE1 11112 bytes
font_01_sfnt_off0002b7a9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7A9 16792 bytes
font_02_sfnt_off0002cfbb.bin
df79971bc8a1c18c32568963eafc233a45a721f6d929e500a0cdf9bbd97fecf1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFBB 18796 bytes