Malicious PDF — malware analysis report

Static analysis result for SHA-256 941854a75b8a875f…

MALICIOUS

PDF

76.1 KB Created: 2022-05-04 12:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 8cb2703c1a0b2055defdde526e1abc2f SHA-1: eaf5d6f7905182396192c2bbb2c2b3d889ed9674 SHA-256: 941854a75b8a875f1061a912fd6b0b2561af96d7e2ee27d1ff25313bf01dfd9e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many pointing to other PDF files. This suggests the document is designed to redirect users to potentially malicious content or to manipulate search engine rankings. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://sunuf.co.za/YmrXLWy8?keyword=the%20cosmic%20game%20stanislav%20grof%20pdf%20full%20book%20pdf PDF link annotation
    • http://cgmorenanews.com.br/ckfinder/userfiles/files/40912238743.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/3584036.pdfIn PDF document text
    • https://nosumanipedujix.weebly.com/uploads/1/4/1/4/141424938/77a1a1021424.pdfIn PDF document text
    • http://chianchang.yun2u.com/upload/files/3470703169.pdfIn PDF document text
    • http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/10540194498.pdfIn PDF document text
    • https://bipinudaw.weebly.com/uploads/1/3/4/7/134718108/gojonaniwisuma.pdfIn PDF document text
    • https://segedexulitino.weebly.com/uploads/1/3/4/6/134612069/ledusigowodifu.pdfIn PDF document text
    • http://xedaphcm.com/luutru/files/sufuwajinavozogatixojebu.pdfIn PDF document text
    • https://szabobuszberles.hu/files/files/kanin.pdfIn PDF document text
    • https://bomapepupika.weebly.com/uploads/1/4/1/5/141571641/7597371.pdfIn PDF document text
    • https://coonvalleycc.com/userfiles/file/nepojojozirapekixum.pdfIn PDF document text
    • http://anaheim81.com/kcfinder/upload/files/liretakuwigotesew.pdfIn PDF document text
    • http://pibar.tw/uploads/files/202203251302251961.pdfIn PDF document text
    • https://dedarapovoxorag.weebly.com/uploads/1/3/4/7/134748910/4562c0fd98.pdfIn PDF document text
    • https://gowokijisamupu.weebly.com/uploads/1/3/4/4/134438950/7475490.pdfIn PDF document text
    • https://pulogumofus.weebly.com/uploads/1/3/0/7/130739416/7126998.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/lqmp5haakdc4fcocol223i2n0j/kenadijaziremefi.pdfIn PDF document text
    • https://pulsekb.ru/admin/ckfinder/userfiles/files/potedozudogezudagumajuj.pdfIn PDF document text
    • https://www.yukule.com/ToBeDeleted/admin-assets/js/ckeditor_4.6.2_standard/kcfinder/upload/files/87349296954.pdfIn PDF document text
    • https://tesudofi.weebly.com/uploads/1/4/1/5/141556174/9274501.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/658614.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_off0000c3a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A5 11428 bytes
SHA-256: 9dfda1fae093c1cff2d27fb30d96c81f4485feb7ff6b8a84445a347289a20ca3
font_01_sfnt_off0000de0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0D 16968 bytes
SHA-256: ec85079c657fea51c1bb076076bf3098a0fc56c9dac932047c4dff2e12a0b437
font_02_sfnt_off00010a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1