Malicious PDF — malware analysis report

Static analysis result for SHA-256 072bf2132d10e621…

MALICIOUS

PDF

89.1 KB Created: 2021-07-01 09:23:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 2f16a67ec863c0e51728f40caa4b9edf SHA-1: f1e26254b93c585daab52edbe1a2964269602e4f SHA-256: 072bf2132d10e6215a5189c6d0a95bfc9af0db32b26707681dd92e9a3aa3ee72
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, pointing to numerous compromised WordPress sites, likely to host or distribute further malicious content. The presence of a 'download button' lure suggests a phishing or social engineering attempt to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bc71022c39d---dovak.pdf In PDF document text
    • http://www.aqsclimited.com/EditorImages/file/mojezasagop.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/rqrosdq1vpaidpq2ll5q9i38hh/samiw.pdfIn PDF document text
    • http://webursitet.org/Files/file/91323307774.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070386d076d7---20377297996.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/464a3029aab72c58b834ceb6cf3062b1/wujavagavusotaxobi.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608238433918b---ferutijava.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/fkbfun6rsg0edkaaniuob4ti04/70277496215.pdfIn PDF document text
    • http://clubesquilacoma.com/uploads/files/40752967960.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d224a54dc5---vejatopule.pdfIn PDF document text
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/fc344ed98beb0c957a457729f8a15ede/81124451022.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160adb30f18cc1---48624575844.pdfIn PDF document text
    • http://sochi-polyana.com/ckfinder/userfiles/files/pikarazi.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/2d74a08a400662f2f05b022935a5b707/11979060091.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b53a4f02de---sanaxigan.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/rvj8o5702554drj74l20raa4e0/81910834820.pdfIn PDF document text
    • http://huiking.cn/uploads/file/282157389622.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/68655f73f4e0cc7e39fdfb5df3e3d020/47887752209.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608334b79f12f---fupasagepufexuxugu.pdfIn PDF document text
    • http://zjhywt.com/images/upload/File/55590172553.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/oiddmaasunuea07r5ksu5k7cik/xevisexagagesidagobuvoduk.pdfIn PDF document text
    • http://bantinnhadat.com/users/files/dujiz.pdfIn PDF document text
    • http://laclonghotel.vn/upload/files/24499116634.pdfIn PDF document text
    • http://garmagostaran.com/Upload/file/58320922087.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a07a841161f---jisedoletagagubuled.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=understanding+japanese+society+5th+edition+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EC 19788 bytes
SHA-256: b20d35d2d442d5126cd81473f53cd5b30a51b2232e0e78a98284019c2a3378e9
font_01_sfnt_off00011838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11838 11240 bytes
SHA-256: ed744014eb2da10117de5bc8172e18932679ade523458d2546447cabadc50a3d
font_02_sfnt_off00013245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13245 2352 bytes
SHA-256: 94b6ef6b882e1252207e9ec411507b17a9cf49d170f86ccf447f01e130b7244c
font_03_sfnt_off00013c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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