Malicious PDF — malware analysis report

Static analysis result for SHA-256 465d2d354c8d08df…

MALICIOUS

PDF

82.8 KB Created: 2021-07-03 13:35:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1bbe56dd5e0bff99862f2d2d7ec20ffd SHA-1: ca720cd979208428134a6d2d66b2257f756468bd SHA-256: 465d2d354c8d08df6e601b1f92cbdf0962deaf84c6f79241201bd513526c5aea
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous URLs, many of which are hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of multiple distinct hosts and the use of UTM parameters suggest an attempt to obscure the true destination and potentially track user engagement.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/mf2bu0ioiiq3es38ms3d34u844/83162272509.pdf In PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/h3nqsplh0na5j1sbvuvbc7eju0/duzifemita.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/hoiajtsblah6skp2e8jupeekl3/32135105984.pdfIn PDF document text
    • http://fanti-fitness.pl/uploads/assets/file/51668842870.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/6a76abb82dfa0ba155e4923d24b14433/11074873404.pdfIn PDF document text
    • https://thuaphatlaihoanghuy.com/uploads/files/finevumanadezapinat.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a7c69f35a---18116536896.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/i6ikh486cirumit5141bvuvie6/lawagebufonipifeb.pdfIn PDF document text
    • http://consol.hu/images/uploadedimages/file/wupatabidedekiv.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/69742599020.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/buluwaxosep.pdfIn PDF document text
    • http://senseoftourism.dk/userfiles/file/bubegikopavekifexetod.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/26012a21b81233736c7f4f9adc339200/busenibowuwizavon.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/6a20904df92343fce993aed8e1e6d017/58134472092.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/02dc96d419ee45452e046c7c05397a38/23878970927.pdfIn PDF document text
    • https://stvorki.ru/files/file/84786210905.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/vuh313db9kv6asl1hq7bo27rd6/95573719121.pdfIn PDF document text
    • http://2440027.ru/upload/file/navuvutil.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/bugolewibaw.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609df8deb8266---31319781247.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160bc02f15a89b---rumonun.pdfIn PDF document text
    • http://aa-nusd.jp/merojuxefaxofawevosuj.pdfIn PDF document text
    • https://drlanda.hu/user/file/sojaditulirikojofakawedav.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160984be6d6735---64320662135.pdfIn PDF document text
    • https://mytopics.it/uploads/file/pijerebunosanosudakofeb.pdfIn PDF document text
    • http://jordanfamilyreunions.com/clients/5/51/51534e3e38036466a76ca8a024fd4923/File/41323399758.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=another+word+for+alignPDF 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_off0000e000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE000 10532 bytes
SHA-256: 5afa4475c9daf65d18836b7bf053cf1b0dd77d563b2db7feb478ab89b5dda6c8
font_01_sfnt_off0000f7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C1 17592 bytes
SHA-256: 27ed1dfe85a378c989750b06b8c5e5f5930992f78285bc74be965c43584755a0
font_02_sfnt_off0001259b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1259B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1