Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36e016ae487567d…

MALICIOUS

PDF

99.1 KB Created: 2021-06-28 05:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a2ed9c58b86ead35a33f19e6c9c179eb SHA-1: a892e54754086391b73ad56d78e10e9e3d23246d SHA-256: b36e016ae487567dacb0f0dc14198cec19bd1526c0dfc0b960331ef8589a2fc4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress upload directories and other disposable hosting sites. The embedded URLs, such as 'https://smidgel.ru/uplcv?utm_term=humanistic+psychology+experiments', are likely used to distribute phishing content or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://smidgel.ru/uplcv?utm_term=humanistic+psychology+experiments PDF link annotation
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/6cc5191d5ee682a58bda620da8638232/fivawezeladegazisoji.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/nrlhfbi7u4pak57arkhopic8n5/98870192755.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/812ff152b97a2cfb3430bf5a5c5d6688/28752169217.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c74ed81c97---xexikupasawijijezudag.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/379a0f6b9df4ef268478d84c949ffc24/gofewewezotedexajitudez.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a08b722e454---26649140909.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd0b4b25ab---62506177030.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c42376c1415---54624195717.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/454075c5f55962b47835be2c2031c7ea/81453940826.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/bidesaretixodope.pdfIn PDF document text
    • https://hurtowniaroza.pl/upload/files/26197347554.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/339b3f112492e6721039a3b0b5f4dca7/tojebobe.pdfIn PDF document text
    • http://badischer-kunstverein.de/ckfinder/userfiles/files/remowazarezur.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/dfc342d1692c9238923b48c919a076c4/84236055452.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/ca20c41b3c3f0aadcefdf26860f4c04f/jamadokit.pdfIn PDF document text
    • https://ewt.cz/res/file/domisodakiziwov.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/da7052d8e1e01f2bd60a90c5ac7e298f/tudezosorunuzetukuzi.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/64fda8e9e9f49aef95cfa5b76c7e0cd5/4328424436.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/kamobawigimaxodir.pdfIn PDF document text
    • https://ahha.az/userfiles/file/22583278221.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160797acfb5736---zixewulitumoriganorikedoj.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/aiimd6vn4rc5ljs213228n7i3b/78433146219.pdfIn PDF document text
    • 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_off0001208a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1208A 16640 bytes
SHA-256: a45ce2ae9aafbf889fd31dda669d520e8d5c3a8af1752d5e786e62811c284e57
font_01_sfnt_off00014bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BBB 11128 bytes
SHA-256: caa1559719c7a43961d70550a29f1e13a82455a4f7adf0eb582e58ec05db9e93
font_02_sfnt_off0001658f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1658F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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