Malicious PDF — malware analysis report

Static analysis result for SHA-256 730c802579c8771c…

MALICIOUS

PDF

78.8 KB Created: 2021-07-09 01:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e5bb30c3ddf76c6e43a315c11065acef SHA-1: 5dda60bbb590f8e594e6d44b842744fd074c846c SHA-256: 730c802579c8771c385d7139e36621f5e02faad8c582a910552ea95a6f173d86
156 Risk Score

Malware Insights

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

This PDF file was detected 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 sites and disposable domains. The presence of these links suggests the file is intended to lure users to malicious sites, likely for phishing or to download further malware. No scripts were extracted, but the structure and URL patterns are strongly indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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://pistant.ru/uplcv?utm_term=ingests+meaning+in+tamil PDF link annotation
    • http://aksaaydinlatma.com/img/editor/image/file/munaso.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609af95a51a9b---vupixakavubovopipumumub.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/pal6ceunr3djfn6v8if1kqn49q/semejorikilerozax.pdfIn PDF document text
    • http://halmar.info/userfiles/file/58855285542.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/kusab.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/vubifazowesidokofefurati.pdfIn PDF document text
    • http://naasschoolofmotoring.com/fckeditor/userfiles/file/rusinikuduxuwozivadamodur.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/c1b2d034c6b7c9f8070ea4b8c9079a34/51224360288.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7c542d4a6---21952818906.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/e3ea127b3125611fc0e09ebf4736e9f4/10405499384.pdfIn PDF document text
    • http://kraski-chernila.ru/resources/file/gukukerezerazadakijapuxa.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/b8qeablqo5vcabrfb3f37jfuhc/59180533422.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab687f3a153---nulaxoniwoze.pdfIn PDF document text
    • http://kutyasturak.hu/images/files/11719523078.pdfIn PDF document text
    • https://kvkumariajnkvv.org/singhania/downloads/file/8602146704.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/ba392962fbedcce822ec76156a666dbe/tafasozora.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d60503554b---40650319938.pdfIn PDF document text
    • https://censcakmu.org/board/file/files/pezipibiso.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/acb130239ebd6f72f21669775747b130/14110872207.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c56e9523d4b---72823620112.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/llrood82n0cfgmn0uttkjitg69/79224645084.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/cq87s7gltd85bsvbb6vh1q8hn1/fupitinok.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/d48062b3336a144d7008a7753bd1f804/9860088067.pdfIn PDF document text
    • https://sitpchemcieszyn.pl/_sitpchem/file/21775724605.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090f8f8e3c78---96538143710.pdfIn PDF document text
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE97 16616 bytes
SHA-256: ef0c56a5caf5438ec93ba69244969fc855fe7aa2d62e23ccc383ee6c8f063fe6
font_01_sfnt_off0000e97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97A 16064 bytes
SHA-256: f76835efc0f70b52b211676925d3c3919e6952eec6cd10f320d1ab287c5fabf2
font_02_sfnt_off0000fe8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000116a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116A2 10184 bytes
SHA-256: 23fb8873257ccf6ca156d4129c42cd36d3d13d92a544fe74abad52898f066568

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