Malicious PDF — malware analysis report

Static analysis result for SHA-256 7154706c190c5038…

MALICIOUS

PDF

87.7 KB Created: 2021-08-04 12:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d3eec0c3df7392caee19c37cc09d7bfb SHA-1: 01dcbd513ecbd506eeefe667b9349ce38e9074d8 SHA-256: 7154706c190c5038b6c37d397e8335d7916395a3278db2b8c044221bf30d4131
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains a link farm pointing to potentially compromised domains, suggesting a phishing or credential harvesting attempt. The presence of MFA and payment redirection lures indicates a sophisticated phishing campaign targeting sensitive user information or financial details.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://hoavily.com/uploads/files/61805694840.pdf
    • http://biosite.ru/images/news/file/26763838272.pdf
    • http://slsnn.ru/content/file/98032424864.pdf
    • http://taispacedesign.com/upload/files/gidumewizusobugogawunama.pdf
    • https://karinbentum.nl/uploads/file/vukiduxaderiletotuwejewo.pdf
    • https://computerzone.pk/file/29218011784.pdf
    • http://jinistudy.com/_UploadFile/Images/file/14315674150.pdf
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/c5ra6u4e1n4ludq2s1td4hbquc/zilepisuse.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984139b1f31---54490227981.pdf
    • http://industra.sk/userfiles/file/12738115819.pdf
    • http://skyline1968.com/clients/74864/File/25077927802.pdf
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/b327173c608f7b1d7a6448a73bb8daac/wutelibawufalotavovizez.pdf
    • http://clinicaveterinariacene.com/userfiles/files/58977042023.pdf
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/381f325fc08dedf012ae38595f6304f0/86634545890.pdf
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/e663f27a62e584108d61ee09e92a7bbc/30076842372.pdf
    • http://vinag7furniture.com/app/webroot/files/editor_upload/files/23883954220.pdf
    • https://tasleemdubai.com/userfiles/files/76181354846.pdf
    • https://www.habitat-morvan.fr/ckfinder/userfiles/files/xipakisag.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/utnn242os8deb8p1b57h5ps3ps/virubesepu.pdf
    • http://macautemple.com/userfiles/file/44681722880.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b155de32672---20205008671.pdf
    • http://adabaskimerkezi.com/upload/file/61902608789.pdf
    • http://scamps.biz/userfiles/file/sumegu.pdf
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7332ca6f7---93019907932.pdf
    • http://pileshoppen.dk/userfiles/file/36121882227.pdf
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e12349946---luzexovedipemizebivat.pdf
    • http://kapsalonindex.nl/images/uploads/paxajivopafajuvokuj.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+much+time+it+takes+to+open+ppf+account+in+sbi+online
    • 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_off0000f2b6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B6 16792 bytes
font_01_sfnt_off00010acd.bin
e30c8e88391640d19086f007962b2e23d9f8069253e2e182ad6e78c6ef865224
pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACD 11056 bytes
font_02_sfnt_off00012428.bin
09337b9175553017da92391d42d2d8949761a16595fb4309e62b7a51fc06733f
pdf-font-stream PDF embedded font (sfnt) at offset 0x12428 16652 bytes