Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ba289297d4c5f7…

MALICIOUS

PDF

84.6 KB Created: 2021-09-07 06:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 7187c4814475a2df812f6913faa012a2 SHA-1: bddb6aa09680e73343c28dad88aae1c9eabe8dcb SHA-256: e6ba289297d4c5f7052a4469be26a99884b8038d6ab0425077cc3aa011c811a3
156 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple compromised WordPress sites hosting PDF files. These PDFs likely serve as lures for phishing attacks or as droppers for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/i104686ua89fsjpqvlhruafpi5/17053121155.pdf In PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd2b5f26bb5---duwupifonusitida.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/064545b125c8b4daa2ca7dc254993891/bemavixapegu.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/18e6087a33a44d3c868717fcec621b50/71897160648.pdfIn PDF document text
    • http://arablift.net/userfiles/file/16740145489.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/97690907829.pdfIn PDF document text
    • https://hoalavender.net/upload/files/78433758852.pdfIn PDF document text
    • https://activepymes.com/pub/file/37665205422.pdfIn PDF document text
    • http://gandolfiarchitetti.com/userfiles/files/futatekusobum.pdfIn PDF document text
    • http://chronicles.ae/userfiles/files/futajenofigumogav.pdfIn PDF document text
    • http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/efd8de7094727940984c400c64c0bac6/nazexamamawuzaxux.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160adbee67ea87---16229839187.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb7a3c2085---nojoxelegenozinalidid.pdfIn PDF document text
    • http://banquat.com/userfiles/files/95781770053.pdfIn PDF document text
    • https://pharmawell.eu/ckfinder/userfiles/files/buxavewitofesiximo.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609634df6aa84---60294406311.pdfIn PDF document text
    • https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160980e77d7c6d---6284857568.pdfIn PDF document text
    • http://allier.proximeo.com/ckfinder/userfiles/files/78934620881.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/eeb301207caa34bd3d0c470e51fa0628/23257864659.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/bitonasekedatetujepa.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/8ea3a8a95ae82b0c0f357446bca3a7f7/61628160326.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/31588663912.pdfIn PDF document text
    • http://www.europesolidaire.eu/userfiles/files/subalelulunujilorerilife.pdfIn PDF document text
    • https://tepihtrava.rs//files/40658596242.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=trauma+definicion+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE516 10532 bytes
SHA-256: e74c5316fbdf6f749bf7a62b73c652c68045c4b3248fc8c3fcb4311206a61968
font_01_sfnt_off0000fcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001150e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1150E 18476 bytes
SHA-256: aaebe0a9e03baff80cc688f554910b60137fcec6d7d5f8f1e7b00da6458325ba

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