Malicious PDF — malware analysis report

Static analysis result for SHA-256 699c1aec26c0ab7b…

MALICIOUS

PDF

82.5 KB Created: 2021-06-26 04:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 65426bc14829bead28c469d180f71354 SHA-1: f1ce2d029b75765554778abbcb2347f4df59865b SHA-256: 699c1aec26c0ab7be27be5a534b388172f291acba6064d741904e5d163a05314
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with several pointing to compromised WordPress upload directories, indicating a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

Heuristics 6

  • 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.
  • 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://attlas.center/userfiles/file/ligosowijisokizamemos.pdf In PDF document text
    • http://plafondchauffant.fr//img/user/file/goxojufirawoga.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a48c60d5c6---fawajolegimukifareviroluf.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/202162684326792.pdfIn PDF document text
    • http://playitdirect.ca/ckfinder/uploadfiles/files/23312263295.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1a26ac1d1---gixifotovekugojop.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d844d12ba---tifiwivetavizitudafub.pdfIn PDF document text
    • https://schmitz.cz/res/file/nobiwor.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/ua1rqtg1lvu14kqqpd5tb47vfp/xegavexorabiwupofizamab.pdfIn PDF document text
    • https://batikatravels.com/userfiles/file/silamodazenusimowa.pdfIn PDF document text
    • http://cichanski.com/Upload/file/5838592404.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/caad99903427c5368a75e65f6d9e10c8/wuwarubetoxobugumoxatemez.pdfIn PDF document text
    • https://aymexco.eu/ckfinder/userfiles/files/86550600432.pdfIn PDF document text
    • https://mednet.mk/public_html/upload/userfiles/file/wesikojukobanunano.pdfIn PDF document text
    • http://joyearland.com/ckfinder/userfiles/files/99090333981.pdfIn PDF document text
    • https://alutat.com/data/file/56675391269.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/67e89deed19dee40c70b81ff4faa20fe/mobalazaparufakexufinino.pdfIn PDF document text
    • http://vote4dannybarry.com/clients/2/2f/2f5d4f67c16906f9b09010289963de11/File/ratezeparaxegazizuragepo.pdfIn PDF document text
    • https://kawanmto.net/contents//files/80141944702.pdfIn PDF document text
    • https://xn--80aaa1arbfjoe3bzh.xn--p1ai/data/files/giluzobogubopepaj.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b9c43edc9f---tobomokifogadilifevigiles.pdfIn PDF document text
    • https://abugfreemind.com/userfiles/file/64990344957.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/59f182a9a1c89b2ba7c7b148361aab06/30913676530.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b5083ebab86---romiferatiwarok.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/zogeposevedepokodeb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=perimeter+of+a+rectangle+whose+length+is+40+cm+and+diagonal+is+41+cmPDF 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_off0000c652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC652 11264 bytes
SHA-256: 157ed35d6311a81bbea7d6ced65ea8b9b40c4574d5b08aed59300dce1cb61bff
font_01_sfnt_off0000e07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07F 17276 bytes
SHA-256: 628775bfc27b9e3b0613d0039f805aa827a3af41792fa7eb59c005f5eba6a050
font_02_sfnt_off00010df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF0 16088 bytes
SHA-256: 450eea5fc67953cc3bdc764260aa6f1739571c17331c9588074966c3dbef4c6c
font_03_sfnt_off00012325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12325 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1