Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec06d1a9bd68dcd…

MALICIOUS

PDF

101.0 KB Created: 2021-06-13 09:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 186beb37898a727f77681fc86c12306c SHA-1: 6c5ae954599b7c53718f71783a84c514bd6f2b98 SHA-256: 4ec06d1a9bd68dcd89d3ce354a073d2627342457e10f821ddbe89a3a6b799160
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external URIs and links to compromised CMS upload storage, indicating it functions as a link farm. The presence of 'utm_term=1vs1+lol+aimbot' suggests a lure for gamers, potentially leading to phishing or malware. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent, likely involving redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9565

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://queure.ru/uplcv?utm_term=1vs1+lol+aimbot PDF link annotation
    • https://investmentskillsgroup.com/images/userfiles/file/jerapogelisupokifozir.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/at8a724nupd488bfq6svvu59t8/74294969726.pdfIn PDF document text
    • http://vorne-sitzen.eu/pcms/content/file/fuporimakinan.pdfIn PDF document text
    • http://bloomx.com/sites/all/sites/bloomx.com/files/99591709084.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/af8f6b242a0ff5adde18f985d7aa8bf1/38702190675.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/44fe76b652acf42f716c0780f44081f7/lenona.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/32571627317.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/bf59946eb4992d69b73d0d245f5de9a1/vilivupodojidi.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987962c3750---74212025751.pdfIn PDF document text
    • http://bebelino.ru/userfiles/file/30924747957.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ac97a27d767---biwexubagunezewobekegimor.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/tisizokigagoveb.pdfIn PDF document text
    • http://www.centralperdana.com/file/buxure.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b7c417194---tibawotujoxevuw.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/bffd9140c476e41e51537f30b4b36588/xawuzupudoveduzuxabu.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/27114049606.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/282e10d062b71b2c09809fec066fc2e8/buwumumozoxadevimawig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00016471.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16471 19780 bytes
SHA-256: 59fbea5ea010838e9dac0dbdb7cf6ae37c41efd732e5370671a680c84f36bcf4
font_00_sfnt_off0000e9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EC 9484 bytes
SHA-256: a8ec72ae0c984d28b23ef12bd9ec306746529bd97d336f22634327c827abedb3
font_01_sfnt_off000102db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DB 4892 bytes
SHA-256: 9543965855d6452a458f88b48957712408b7a3bb80d366235e90351eb8778e23
font_02_sfnt_off00011370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11370 4248 bytes
SHA-256: ee002f9d7cf5d651ad0eba3473dc73392017ef79731b332ec9997222e17b427b
font_03_sfnt_off0001239c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1239C 8008 bytes
SHA-256: d9f741c242a446d25add642d3663e2e1ab8e8381f8428fa722720f2514984dfd
font_04_sfnt_off000139ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139CE 12776 bytes
SHA-256: cb0736e55f247eacf5c06e4863e114cdae0f536e9cd5c28ba098a41ea216f785
font_06_sfnt_off000185a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x185A8 1736 bytes
SHA-256: 74be5bc4d46f64e5c506ae1006f7022dc98ebf960e37c7bf417c2027ca73106d

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