Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc6aa02b605783f…

MALICIOUS

PDF

87.8 KB Created: 2021-08-05 13:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 45e5a2eb53ab132447ca1779ea8ea1c7 SHA-1: f41a2fa86c4105030eb0028fbb1321168831dc92 SHA-256: 1dc6aa02b605783fb48de70a2adeaec9da3a3f7c3a3a50cac021e8649a861d0f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://sensesgrouphk.com/louis/STARKGROUP/ckfinder/userfiles/files/difepitataxusonaxarolajop.pdf In PDF document text
    • https://angkorphotographyguide.com/userfiles/file/bivuvigateten.pdfIn PDF document text
    • http://www.pzkexie.com/up_files/file/401284935.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/44797cb82bad6963655a90e31bacf6b7/vijedeb.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/8ns0crqq26givbib82fto9dpar/59573949493.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3ec0ebaf30---40441322303.pdfIn PDF document text
    • http://gymostrov.org/gymostrov/userfiles/file/81240782277.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5d9ea9d155---88488509843.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/12708085335.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1608557f729667---51985825083.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16096687e13b64---mamadokek.pdfIn PDF document text
    • http://techbico.vn/uploads/image/files/37429128081.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160832d9d562ec---89172939567.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/tmq2l4a7l6vkf8fajf5t61vclh/76510447676.pdfIn PDF document text
    • http://www.americaninvest.net/upls/files/4970155250.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fd3021cc917071addeacbe21940ad91c/25392764955.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/vojatolexomelawi.pdfIn PDF document text
    • http://scantech3d.com/files/fuwasutekasaguwokona.pdfIn PDF document text
    • http://hainescentreasia.com/images/file/74051962891.pdfIn PDF document text
    • http://batdongsandautieng.com/upload/ck/files/57403034981.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/3137970721.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/gucsu5jfo402fm2f01bm9b1sfa/95423121631.pdfIn PDF document text
    • https://thietbidienmanhcuong.com/upload/files/demarizunujulanin.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/i0058cnrtgc3lu4tc7pj4kbkof/lufibunapekifisewapokuvo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=falling+slowly+violin+sheet+music+pdfPDF 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_off0000ee91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000106a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A8 11312 bytes
SHA-256: e999be0351da0fd44f0e6eeb357d4f73291f137331a09fa9d4bfb1e016bd4d1c
font_02_sfnt_off000120eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120EB 18100 bytes
SHA-256: bf023de6e9841e45c28426f3aca33dc48665df66f12e44b9084adec18131e90f