Malicious PDF — malware analysis report

Static analysis result for SHA-256 7056b5686fa5fa10…

MALICIOUS

PDF

86.0 KB Created: 2021-06-26 05:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c0747bad469963b7ff25eec2084dc6a4 SHA-1: 5db95c578c1ff28614c3f40c1c89fe87ba211127 SHA-256: 7056b5686fa5fa106c9897f49d03000cd42090ab4642eebc518a2efe2333b30c
176 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to deceive or infect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://nitexprofi.cz/userfiles/file/37279217606.pdf In PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1607df7e780800---58373679424.pdfPDF link annotation
    • http://buyyoutubelikes.com/ci/userfiles/files/34296913287.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/pozexitabaxuraxijodu.pdfIn PDF document text
    • https://petikdaun.com/contents//files/29335179344.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-3/20210503162633109297.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16091f8eecee51---52783648146.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/k7r7ra4mbqjsc9nspbedmtrjgq/10770328578.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944edab534d---17290017129.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/2fd5d9447169f4aa0beda175fe88787f/tomexeze.pdfIn PDF document text
    • http://colorfulmedia.de/fotki/fotki/file/21059174058.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160831a7bb4479---rufokevowiki.pdfIn PDF document text
    • https://andrejc.si/files/file/naloxexefomogaxube.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085a728091df---19070381107.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/25691197343.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/58053940880.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/47khv1sd66umt40l2sabr3ui6q/61451561925.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606fba6372a89---komobixotika.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/4ad1e31e60602291643036b3b1982921/maxopifokuposokide.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/d692540997ad7880a618fa0c7da58085.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf945d4c0d2---64935827155.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/491913293c4b8a080653d076d3f847cd/64772691803.pdfIn PDF document text
    • https://samavetpharm.com/userfiles/files/tekijusale.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+pronounce+the+german+alphabetPDF 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_off0000ebaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000103c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C1 10880 bytes
SHA-256: 8ff028c9432c30d2084fb0dedfe06c869bf7a20963ace17c4c6abebe1d229f2e
font_02_sfnt_off00011c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C87 18448 bytes
SHA-256: 670a163e3e8f9f24990d4cb31d18be55d80c2679e12112fe1187406f4f8d248c

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