Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb2750b9a97cf2d…

MALICIOUS

PDF

85.3 KB Created: 2021-09-03 05:59:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: a64ad02197e6c6544db065a1b8611a3d SHA-1: b1b7976c23429b33325bd7ed52967f1856b014d9 SHA-256: fbb2750b9a97cf2d23e2c5312c5af2f63482c2504db97037197f448f56ff801c
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains numerous links pointing to compromised WordPress upload storage and other potentially disposable hosting, indicating a link farm designed to redirect users. The primary purpose appears to be directing users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c0064b1da40---43916501976.pdf In PDF document text
    • http://gdgom.com/upload/file/210826015745106385fp37yn1i3ujy.pdfIn PDF document text
    • http://tasarimak.net/ckfinder/userfiles/files/65960724421.pdfIn PDF document text
    • https://organicfertilizerproduction.com/d/files/zujewalofubojemepapopofal.pdfIn PDF document text
    • https://masukpt1.com/contents//files/kiteruwigamowaleg.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/02375g44tsmjcqhon8ns3keoh8/96700157262.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/d7cffabd47756c62bd495258a1d333de/zakomojavoxuromimojibop.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edd64e0a089---tizimusozawur.pdfIn PDF document text
    • https://magnificenttreks.com/userfiles/file/sirolofiroxu.pdfIn PDF document text
    • http://karcannakliyat.com/userfiles/file/wubofetusinoxeziwe.pdfIn PDF document text
    • http://ambvetbrashersclavoghisu.eu/userfiles/files/76347413152.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f5f8caa66b6---zuvewenevis.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160a2bef22f43f---7542260981.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daa8914e4e9---61732809143.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c851ca504---70484928261.pdfIn PDF document text
    • http://3gr-group.com/ci/userfiles/files/95405652300.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f47ebc94b---ruvufiduf.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/coduo2672qmu0bnpar1qt7s2ab/94820334367.pdfIn PDF document text
    • http://alcantara.cz/data/file/88281115887.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083811683df2---bafazinanijaxax.pdfIn PDF document text
    • https://s-oil.hoakhanh.vn/uploads/image/files/75772289670.pdfIn PDF document text
    • https://ochronaskory.pl/pliki_user/File/29935724663.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=christmas+guitar+fingerstyle+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFC 18736 bytes
SHA-256: 1b204ea1f171c666bf437307135a3ad98a4cda50c482e333e80306f90ee74a2e
font_02_sfnt_off00012e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E00 11068 bytes
SHA-256: 4dae7c1179b4d93b6924ade86c2b173433e45d7c759db93c731ef8f6b2e6f9d3

Open this report in the interactive analyzer, or submit your own file for analysis.