Malicious PDF — malware analysis report

Static analysis result for SHA-256 70adb0d3d2834b3e…

MALICIOUS

PDF

143.2 KB Created: 2021-06-30 09:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f28a0ea005dd4b656d8f4cbbdf033567 SHA-1: c739c2062123b42daa427b344859f751cfbbf69e SHA-256: 70adb0d3d2834b3ee521f028da2f6760b36ceac865ae7224ceae4548dcabf685
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to compromised CMS uploads, suggesting it's designed to lure users to malicious content. ClamAV detected this as a phishing trojan, and ML classifiers also flagged it as malicious. The document body was unreadable, but the heuristics and URL analysis strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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 http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/39nsih5gaead2057so85s3te9o/jurutisidisepokefixeti.pdf In PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5490cb7b56---43090885132.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/rolij.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/10644014289.pdfIn PDF document text
    • http://akssert.com/userfiles/files/39722498527.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/7rm823ugcofqsvu0152kks7uv2/mororikipid.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c66478f148---56644506811.pdfIn PDF document text
    • http://hi-techfiber.com/userfiles/file/221068775.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/amvam09tsrnlbngsiej70lf6sv/62339048118.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160799ada3897d---gusava.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/pojiberimoviparakitu.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16071190fb136d---73901975817.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfee8db0c2a---67752999158.pdfIn PDF document text
    • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/3824490786dc8dff43458b8f4f60e202/ratijibilipujo.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/38a446168fdd61b3367e52c81063e1dd/pijiwizifunubupaxawusunoz.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/zunonoper.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/efdbca959824786bb778a9fb71510ce8/lubusizob.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/dujifepakuzebemufasep.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/k7ckk7if4h95alcso8f1ufm9ie/pevafozesituw.pdfIn PDF document text
    • http://firewheels.pe/userfiles/file/redafasef.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/a3f224a1e2ad217a55a5bf9b60caae3c/kukoladozunow.pdfIn PDF document text
    • http://ondrejkocar.cz/img/file/xojoduwikegutumejuduledor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=exploring+physical+science+1977+pdf+free+downloadPDF 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_off0001cccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CCCB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001e4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E4E2 11356 bytes
SHA-256: f13e48fb3486f85e88e7951b3fc4fbc8446208ec11fe4b2713282f2c24b266bb
font_02_sfnt_off0001ff8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FF8D 18256 bytes
SHA-256: dc31062c2bc1f3c892f56ac2b28b00d7e429734bf44a414e93074f7b03efe9b7

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