Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db97410762ea6ed…

MALICIOUS

PDF

88.4 KB Created: 2021-07-03 05:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 44dc8f82d082d5f0bc89076759ba3ad6 SHA-1: 6d513caec5a8613a6581003e3042c065edf10349 SHA-256: 2db97410762ea6ed3f95b66075d07675d69c31058c04c27f5039e4741aa1cdd8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to lead users to malicious content. The ClamAV detection and ML classifier strongly indicate a phishing or trojan distribution intent. No scripts were extracted, but the PDF structure itself is used to host and distribute links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://archism.ru/uplcv?utm_term=what+does+mechanical+weathering+mean PDF link annotation
    • http://alphasigmaoverseas.com/userfiles/file/jeviwigakupumo.pdfIn PDF document text
    • https://bczenekar.hu/files/file/pozebovomatijo.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/db533855a7676d887604d9e093c097ab/2671394357.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/c6d3aacb49aa770e30a891531df0acd8/jukejilin.pdfIn PDF document text
    • http://teraval.cz/res/file/mofogefi.pdfIn PDF document text
    • https://aneri12.cz/res/file/vebetibilawabododewojam.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/u1tcmos62k4nmj2kkh47dn2au4/86995122565.pdfIn PDF document text
    • http://studiobardinisrl.com/userfiles/files/samugasitipesaxo.pdfIn PDF document text
    • https://biomedchita.ru/imeg_master/file/zozolokusal.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/b8950abc63487aefba49928b4ae911d3/gurifikupugobukav.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/f252a6ad5c9c4db240a8ed63691ebf4b/zirafumaxovusetaxa.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf5e5a09fe---92153136105.pdfIn PDF document text
    • http://fontanarosaserigrafia.it/userfiles/file/pumijoj.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///73657534500.pdfIn PDF document text
    • http://copelandreunionla.com/clients/6/66/66f6f3de7053633686652f51c4c00696/File/12388925473.pdfIn PDF document text
    • http://boathousebrokerage.com/userfiles/file/taxibapukasikijonefane.pdfIn PDF document text
    • http://hytechplus.com/userfiles/file/42306399718.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7dbb4ddc5---nutemejaxisa.pdfIn PDF document text
    • https://mumegram.com/userfiles/file/26633616410.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/k2kcp58km95pcnmmbkdbgp1175/wenisunazip.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/16072af942fc22---16347822450.pdfIn PDF document text
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/7d4hu645kmfpu9o44rpc0lh37s/pevudutewudonoxivamuxuto.pdfIn PDF document text
    • http://domholidays.com/userfiles/file/fubewojuxi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DB 17404 bytes
SHA-256: d4ac731eb51b5c930b33bf4e662195f32e2f3301c52678cba4be3b6e843f61e6
font_01_sfnt_off00012373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12373 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B8A 10896 bytes
SHA-256: dcd548a0b95ca656f5bd15a78491252246eee89aa4a3e987a789d93cca094b67

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