Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a63883cebf9266…

MALICIOUS

PDF

101.2 KB Created: 2021-06-30 08:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 41d4f90773d0585aaf883c9792fa4cfc SHA-1: 14e5bca7890c1cf00d862afa7336ac614a48ec97 SHA-256: 58a63883cebf92661a67de78e1403d6887228aceaad8eb1057326faf18d06d6f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to external websites, many of which are hosted on compromised CMS platforms or disposable domains. The presence of 'utm_term' parameters suggests these links are intended for tracking or phishing campaigns, likely to lure users to malicious sites for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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://allytemp.ru/uplcv?utm_term=call+of+duty+ghost+manual+pdf PDF link annotation
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/panipopobejopurafavo.pdfIn PDF document text
    • https://banktapeunadana.com/tapeunadana/bank2/admin/userfiles/file/xopipizeger.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/09070a504ef168e00f054ce5c08a4b18/nezukemafe.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/1609b84bb37cc3---78285818406.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/577ac42c9fe00eba9b86f5239fcef7b5/junovakokatu.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d7ce831f9---fupazuboref.pdfIn PDF document text
    • http://whalesart.com/uploadfile/file///2021052304102388.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/itg2v2gjd9p3aufmia73nhvt1q/wunuwulepi.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/17017884322.pdfIn PDF document text
    • http://abpaluso.com/upload/file/sulofuvelo.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/5627a38db2f81447c6b608bbf2e0e211/27406094334.pdfIn PDF document text
    • https://welltowork.org/wp-content/plugins/super-forms/uploads/php/files/39c25dd207627b435624d8ba46f07538/39406320537.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a8eceb698bb---17912893388.pdfIn PDF document text
    • http://shosholoza.de/file/gusapikafisiwakaf.pdfIn PDF document text
    • http://wingmanplanningdemo.com/userfiles/files/73506966540.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085cc1bc446f---41293328839.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160b0ccc76af03---50860453480.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021051202430213.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/6elodkbrhbhol07tudtc39egae/66370845190.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210630_6BC83FD746444BD2.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/7b3089a6564e5895d5ae7e394c01053f/nurewuxoziwewitutufepu.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/2b801d0f6b71961003c35f3ddfb88567/wadikokijitagoloxetazus.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/gakopavojowogaxuvovel.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/59031580150.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1609b51708843e---22942211353.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/3b24612c13c0055857891456e0d8851c/lunedibagujokevigu.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/87922267859.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_off000127a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FBB 17696 bytes
SHA-256: 409a9f4f74f8cdc5e79b1be0ec261c23fcd766590c4bc0461976aae11615e035
font_02_sfnt_off00016e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E93 10864 bytes
SHA-256: 1e2e47403b0926ee7e16eabae6aaef19ddf46b304f9f5c88787c70159575413a

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