Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aacc12214ab8ec0…

MALICIOUS

PDF

100.9 KB Created: 2021-07-09 01:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 28527d48572f0ad300242fa048e80e06 SHA-1: 70303b8f3f721d9aae3643a2847e01be4b0a0f3d SHA-256: 8aacc12214ab8ec00e806b88160300e395754f8ab3f38769be598e2d2b96c874
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories. These links likely serve as lures for phishing attacks or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/a29cb74c8e345c77bbe9585fc8ac29f7/87022231784.pdf In PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/6fc255de20546f5a77e16dace4b6e50f/kokusovebexewojubofoge.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/e9c92df09f71bb0744b083c826538ab2/pomosimofuwokafisuva.pdfIn PDF document text
    • http://moreit.ch/productinfo/file/69798525810.pdfIn PDF document text
    • http://dribblebar.pl/userfiles/file/zafuvifov.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac67805f8f1---tubejelowolelaketux.pdfIn PDF document text
    • http://vasvaripalmuzeum.hu/upload/file/boxedawutaligaxak.pdfIn PDF document text
    • http://mgocsm.in/userfiles/file/pogovavapegima.pdfIn PDF document text
    • http://anpo.vn/upload/files/kemelov.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079bc1ac4ecd---fejomenal.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/302bsrks2vontirnjqai1387o5/3272025512.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160af383dc1e62---97284540248.pdfIn PDF document text
    • http://songhandiban.com/uploadfile/file/2021070209504873499.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/87bbc28af071b7f60d67b5ed9d04773a/77745130082.pdfIn PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/2422cf739b62681b46c1cc6c9d798556/13259699943.pdfIn PDF document text
    • http://aisef.org/uploads/userfiles/file/file/22524748516.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/fe6e4d25af3728dc840dbd5ad91c1674/75020327378.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/s1ji72aiuc7rvoki99jf6trrm3/taramegixugenuvibujison.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/d211cec55096c24b555470a479c4f399/bupoxipizedamibebev.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/69a725883da72b95ed1d82c4ff6f2bb5/nabebojawo.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/908454687c4939a2e3c7e39801f134bf/40373902730.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160c2dd4171938---87958595627.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160802c8eb7876---46567704289.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160766af43d01d---sibosakonixopanuza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=gold+per+ounce+todayPDF 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_off000127bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127BF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD6 10500 bytes
SHA-256: 133906747609cc54ee7a61029ff88fb17755c518b6690f64d0a35264bfeac39c
font_02_sfnt_off000157e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157E2 17840 bytes
SHA-256: 6891a0247719ff29eecfbb8d3d0e1f30d46c4edf8012ed343f3ab28e2e1022f0