Malicious PDF — malware analysis report

Static analysis result for SHA-256 73ac12f8d36a75d4…

MALICIOUS

PDF

101.1 KB Created: 2021-06-26 14:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 94c2f92fa8909aac962f2cefc8c5e7ad SHA-1: 2c8315099e529b334ebf80e85c220617fbb02910 SHA-256: 73ac12f8d36a75d42d8c61c9f7c9b273616d4f293746a809cfea29da2ac7c6b5
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 ClamAV and an ML classifier. It contains numerous links pointing to compromised websites, many of which are hosted on disposable domains or utilize WordPress upload vulnerabilities. The presence of these links suggests the document is part of a phishing campaign or a distribution vector for further malware. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9938

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://smidgel.ru/uplcv?utm_term=cardiomegaly+pericardial+effusion PDF link annotation
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160874e5585989---jolamuki.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/43679cc9e7e58ee8c441f242a48ee3bc/57817374307.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/32863229795.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160974a06ed6d7---53397941436.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9c3cc4294---buxitosowepipa.pdfIn PDF document text
    • http://mousike.it/img_ins/files/tujolefotad.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b0cd50264---pibupijetulenarisipujusaz.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a931990b6c5---8658389789.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/7e0cd0aa2126b38bcab18fc7101d9747/67740625488.pdfIn PDF document text
    • https://muzeumkonstancina.pl/attachments/file/47305531516.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/62204723793.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/ivcg8sqdhrc2scobvp7jh9a01l/5726245783.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/bpv1sth355u20fpiij11ggrtu5/5408171829.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/49084712520.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/784850f68ff520af2b333f053fc5b05a/saledokogezibenezatalimap.pdfIn PDF document text
    • http://cuacuondaiphuc.com/upload/files/sutabiraximidopodixabil.pdfIn PDF document text
    • http://dongxuyen.org/upload/files/19540435619.pdfIn PDF document text
    • http://www.buildingmalawi.com/images/uploaded/documents/judakisinone.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/2022a51f43c36167a880e2f57bebbe82/75483203245.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/5fbd6a00d4d162a06dbea4328ffceee3/pigatogozejowu.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/516b3da895a32917c01ceae5377ff998/mebadafuk.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/v8uq91t2vi3btudj3f04jd7tap/tajenizebewewufej.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d6c53a156b---36766495669.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_off000128dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128DD 11108 bytes
SHA-256: 668106439cf60fdb3e3f457880a97d159787432f294b18d5edeb76be787e8d82
font_01_sfnt_off0001428a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1428A 17260 bytes
SHA-256: 6f36b62d88c30bb17cb01eb886eeddc0b1bc3e2e9e2a0cc8c77d1a54ea3205ee
font_02_sfnt_off00016f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F4B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.