Malicious PDF — malware analysis report

Static analysis result for SHA-256 012b6112159ba0ef…

MALICIOUS

PDF

98.9 KB Created: 2021-06-27 19:34:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 053047a25832cd3b34a83fc53d871af6 SHA-1: 66bd18710ed19bed4f1e143c99ef769c0d2bdd2a SHA-256: 012b6112159ba0ef01357b95b794efe52d947a4bca67eba972ab32c8ff783801
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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, directing users to multiple compromised WordPress sites and disposable hosting domains. The primary purpose appears to be to host or redirect to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/83099cdf4720f8d6870eb1179ab4d360/mefopexulikuwe.pdf In PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/0b0586b220047564a4fc1d23ab62622e/tedadirikoki.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160990bc1b17bb---65218018392.pdfIn PDF document text
    • http://zge-led.com/luodan/images/userfiles/file/mageperitenozegesugojexaj.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc20184841c---gukabujanafusalujerap.pdfIn PDF document text
    • http://hanboo.cn/Uploads/file/2021051705123670554.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c33174ee2---81257367375.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/7476kg26ijb738qcdl1t2inu21/sifuravujexomoba.pdfIn PDF document text
    • http://uralinteh.com/uploads/files/90742964520.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/a1f2442ef1d1a9a7c2bef76644f2bd1e/58308981238.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608369f711bb5---17565519868.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a56e6ab65e---61965429204.pdfIn PDF document text
    • http://kmkonsult.cz/userfiles/file/xisoresi.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/suvozakopavod.pdfIn PDF document text
    • http://johncarroll1967.com/clients/1/18/1896e795ecc2602204d707ec4e69586f/File/kuwarimufimipubogetogiv.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d5c45a3af---jimisiwekemetunesomiximi.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/56456800917.pdfIn PDF document text
    • https://securitegenerale.tn/userfiles/file/77639452255.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d47e4b963---jomezemekenotakawevedogiz.pdfIn PDF document text
    • http://cokhiminhhien.com/media/ftp/file/gukenarizefakimunu.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a08f98c65b2---fijivizuvurejulotufegad.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609306ff5ebbf---47282459061.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/7f7a5f58a619913eee5fe36441922599/joxatawupolamekilawod.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/98ebd262463fb8065bf82a7b388f4734/numowavusekogobatoruxe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=list+the+similarities+between+aerobic+and+anaerobic+respirationPDF 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_off00011852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11852 19936 bytes
SHA-256: bc1fce21a0293c3950875afef1ef68299bda0d8e221f1f655b9671edfc2e13f6
font_01_sfnt_off00014c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000164b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164B4 10960 bytes
SHA-256: 6841fe0d135a8236c7d15d74cd4a07eb7fae91fb525252c4c4bf50aefcaa46b7

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