Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e52963d14a1faa2…

MALICIOUS

PDF

110.2 KB Created: 2021-08-02 15:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: e1d7529515bfaacdfbd067ac75833518 SHA-1: 843e6757f19d8f6167f683216614c2a11bfc8495 SHA-256: 5e52963d14a1faa2e21d7822ca5b2554775436f206806719ba758add33c06deb
176 Risk Score

Malware Insights

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

The file is a PDF containing numerous links, many of which point to compromised websites or disposable hosting, indicative of a link farm used for phishing or malware distribution. The 'SE_CALLBACK_LURE' heuristic suggests a potential callback phishing or tech-support scam context, although the document body itself is heavily obfuscated and unreadable. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://midlandhigh65.com/clients/6/68/682e31fde28f8c6bff7ebba57332ef5f/File/repupixet.pdf In PDF document text
    • http://iqlacpro.vn/emotive/upload/files/wamavopikasi.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/85cafe3802189eefb99fa416433f5477/58932480582.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/p6vmfc0sf7koer4t7kfrbam193/kinapunazulewafera.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ba64a2ff4---lojosev.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609403dff1d85---77819956970.pdfIn PDF document text
    • http://metaglas.kr/userData/board/file/gakezuz.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/9ca4c120bc77fc902e6d965599ce5da9/32751437663.pdfIn PDF document text
    • http://myphamasia.net/upload/files/74074391402.pdfIn PDF document text
    • https://mangmalungtea.com/userfiles/file/xolikikotidaginowase.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607662f00b95e---ruvaweli.pdfIn PDF document text
    • http://leinerpakgelatine.com/survey/userfiles/files/zexadotarivuxafifi.pdfIn PDF document text
    • https://umutisi.com/umut/upload/files/zusubukudagevukovomubus.pdfIn PDF document text
    • https://masterjobintl.com/ckfinder/userfiles/files/tupoxadozogomitum.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4a879a870---gupejemosawimafa.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b181fd9c388---moposudavovo.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/776f425875560ca397858aef2fe54448/73738070451.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4cc7e4444---98221126281.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/32986335263.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/280533197736.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=arizona+corporation+commission+annual+report+form+2021PDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F98 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000147af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147AF 11076 bytes
SHA-256: 2c68fec8e1aa176af37bb59a1c58accde7a07791c4c9532924d6a73f8dbc7b52
font_02_sfnt_off000161a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161A6 16140 bytes
SHA-256: 00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b
font_03_sfnt_off0001771e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1771E 18608 bytes
SHA-256: 51e62076bb0dde33e32be5c36a8b9c0de93df5498bc54f4f31adf92acb8d81d0

Open this report in the interactive analyzer, or submit your own file for analysis.