Malicious PDF — malware analysis report

Static analysis result for SHA-256 617417d52113a712…

MALICIOUS

PDF

73.1 KB Created: 2021-06-28 21:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3ef0027a65b2c4d7ffc36304fdeefb33 SHA-1: 0d4d37bef898a746ba89e6af744970e10d55d7e5 SHA-256: 617417d52113a7126ffbc03cc566935195a8a75bb4ac9ec41bf3b49248b16c46
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating it likely contains an exploit. It functions as a link farm, with many URLs pointing to compromised WordPress sites and other domains, suggesting an attempt to redirect users to malicious content or phishing pages. The presence of multiple external URIs and link farm heuristics strongly supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://bishnutoursandtravels.in/userfiles/file/20781524178.pdf In PDF document text
    • http://119hero.kr/userData/board/file/95015034365.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/00873611c6d33cef80d3971c96a01423/xemefija.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/fupenuku.pdfIn PDF document text
    • http://foodchemsino.com/d/files/24115442108.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/604e55abfeda70636af1a8d942109830/8163045543.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/geldlp9hsjictqqbb5lrm1l8g3/43795871914.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af5e9cab233---12499530664.pdfIn PDF document text
    • https://seitonsolutions.com/ci/files/tanalukesamokulo.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/v8o9gr4i7r9g53np8rc7a4lvpu/27337870658.pdfIn PDF document text
    • https://grup-insaat.com/userfiles/file/76175701445.pdfIn PDF document text
    • http://ecompletecontact.com/ckfinder/userfiles/files/zobusimofabagafa.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/h0ecqh4r1dfbms9ulsmih6r3c2/lojesatoniz.pdfIn PDF document text
    • http://shannonlakeestates.org/fck_images/file/40153459305.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/leparazabiguduzewuze.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9373253a1---92397994829.pdfIn PDF document text
    • http://bike-aholic.com/UserFiles/file/satifetilegunug.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16072d6bef266b---56125183328.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a7254f92b8a---4234489095.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160799d0a2d8ee---80766646294.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210621_13E212F6D2A98656.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/ae5204f928188f3828a79024e1d77c25/digasuzimaxo.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aa1e30642d8---35782907994.pdfIn PDF document text
    • https://24emk.ru/ckfinder/userfiles/files/magox.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/topidu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=ams+ocean+studies+investigations+manual+answersPDF 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_off0000bc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC80 16016 bytes
SHA-256: 5d36b99151b7d7d6582f972cd065b27bc6a92ab6f6d0e4e3dd00f38fd8501996
font_01_sfnt_off0000e5c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C1 10944 bytes
SHA-256: b5aa265640619fb3b97c810b7362f53d8f52fa4c8633fd3d28cdd54bdadb5b52
font_02_sfnt_off0000fefb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1