Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f4d648833857ae…

MALICIOUS

PDF

84.3 KB Created: 2021-07-08 06:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a8b4462a8257338d99f58b0528d5dde0 SHA-1: fabfc9206813534f47b70c5a495519d1eb082233 SHA-256: 92f4d648833857aec9ea3e060aa6c1556405ce0a1104d5bd120304f6ab29a796
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan payload. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other domains, likely serving as a distribution point for further malicious content. The presence of multiple compromised CMS upload links suggests a coordinated effort to host malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/2b795005b471a33d44189a67c44d1184/wabudixuzotogizulixobafe.pdf In PDF document text
    • http://selfmadefilms.nl/userfiles/files/56402621652.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/b6d33aafb8a4b03c85cf11948a2765e8/filititijizes.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160cb0bbc4c353---9235759178.pdfIn PDF document text
    • http://blissrenewbeauty.com/newerac2c/userfiles/file/45866937379.pdfIn PDF document text
    • https://apotekatia.ba/fajlovi/zugojanalatezu.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/13752922711.pdfIn PDF document text
    • https://ptkas.com/kingkong/userfiles/files/wesibiwirofisuluzakek.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160aace1f17bc8---34000682044.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/f19d872910fd00c494773bb92b33a6bc/24993547246.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/ae258fb5d513d52f77117bfa337e99c1/wulowavemisexa.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/a854ff8242da6dbd31310d98e6b4d3d6/89132118277.pdfIn PDF document text
    • http://thietbiotovn.com/Images_upload/files/94962206986.pdfIn PDF document text
    • http://slhs1958.com/clients/18590/File/14388091622.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607e80d64786b---69133358465.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/0198880fbeb649f46f8d51f641cc7218/36363460668.pdfIn PDF document text
    • https://dentalrud.com/userfiles/file/42153753503.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/aar05dl0ul8duugdss7ri937p1/86853348197.pdfIn PDF document text
    • http://sanders-scottfamily.com/clients/26926/File/88246942853.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160be6b8f23fd3---60995138152.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f755968e88---dugopikonokogobobe.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/na0p1j1ctabmnhk45ro86l2rop/37310745067.pdfIn PDF document text
    • http://cnex.cc/images/blog//file/fenovizujemukabop.pdfIn PDF document text
    • http://cancercareresearch.com/userfiles/file/65027309588.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=how+to+connect+wii+to+wifi+2020PDF 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_off0000e767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE767 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7E 10172 bytes
SHA-256: d1cfd4a2a241acaae4522b11ccbe0a5c80836d2a4135b6969581cdcac1f9a8ce
font_02_sfnt_off0001166b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1166B 16860 bytes
SHA-256: 7cde9ead34642b830d59a57ae5f98913b3952861354a7198288d9d803c15ce69