Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8b432e98f2a3af…

MALICIOUS

PDF

80.7 KB Created: 2021-08-29 13:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 9085eefb8ca36ece39128f3dca43c72c SHA-1: fd9dc2c3ecafef46ce504163784f88d85ae77aa6 SHA-256: aa8b432e98f2a3afa2e1ea2e0de35d5836d4bb0e1a42a34036b22cd4adbe35be
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://uss100.com/clients/5/56/562308f4da1da23328cfd9e5c9f3e68f/File/73627948929.pdf In PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/xotisulazatib.pdfIn PDF document text
    • http://archerelectricsupply.com/userfiles/file/36384605763.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/fd35a817aca3556ebe1ad2b2ea075019/40994822244.pdfIn PDF document text
    • http://air-ned.com/uploads/files/kaniwi.pdfIn PDF document text
    • https://www.zochrot.org/ckfinder/userfiles/files/dupaxapa.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f9e8b4ef8---48804808183.pdfIn PDF document text
    • http://fw-simple.com/uploads/files/93576217652.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/84ftq40823cscbmio0uutpepkg/26065594774.pdfIn PDF document text
    • https://mayurherbal.com/userfiles/file/kufos.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/69093020993.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071a74bc0bd8---74983684242.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/22374279916.pdfIn PDF document text
    • http://softtox.pl/new/userfiles/file/51802446116.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609bcecf810b8---zuzuropibugupadibezevuk.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/cc9f17d2586ec27606bd105182ce9f4f/boposesixam.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/begowoweko.pdfIn PDF document text
    • https://mkycc4.com/kycc4.com/userfiles/files/piwuwexivo.pdfIn PDF document text
    • https://grandhotelbulgaria.com/userfiles/file/20290925683.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/4c20b6205088b4e607ee630b6fc8b125/fupubavot.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/jt8lks9m61s5g16d0rl6hmbtm3/tijotorizirax.pdfIn PDF document text
    • https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/6534bcfcf36b8d52f649f74309a8d7c6/vokog.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e6c19571472---77360051255.pdfIn PDF document text
    • https://tasivn.com/upload/ck/files/vanuzelej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=to+be+all+in+a+day%27s+workPDF 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_off0000d5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E2 10572 bytes
SHA-256: 569d4e73bfd1bad5fa122c697cb413881d69b59e90f543712406212e4bb6b16e
font_01_sfnt_off0000ee38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE38 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001064a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064A 17776 bytes
SHA-256: 5f6985716b36ee756afe8d2130940e288b97ab8013362b85878f249d6a270486