Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a826357a1d0d06…

MALICIOUS

PDF

81.2 KB Created: 2022-04-09 07:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: b35fca2f0e7180e54b0d1d3c129942d1 SHA-1: 8407516aea5d0ce9230055412aa94aaae13b22ab SHA-256: 18a826357a1d0d06b5ed6ca09c8880674623e94a688797845d973af0cce4a6ff
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gugagefa.weebly.com/uploads/1/3/4/3/134343265/68fae14299db0.pdf In PDF document text
    • http://www.ctnphrae.com/ckfinder/userfiles/files/fomusomedopovoxoxetusijeb.pdfIn PDF document text
    • http://aurora-c.jp/files/files/82650883275.pdfIn PDF document text
    • https://detaxenenikub.weebly.com/uploads/1/3/0/7/130776267/gefuzogiwowukiz.pdfIn PDF document text
    • https://wiltech-hk.com/editor_upload/file/45262161119.pdfIn PDF document text
    • https://buwipifigidorip.weebly.com/uploads/1/3/0/8/130813409/3f62ae88ca074.pdfIn PDF document text
    • https://smshealthcareservices.com/ckfinder/userfiles/files/nimadesamumar.pdfIn PDF document text
    • https://tolopexe.weebly.com/uploads/1/3/1/0/131070113/2866125.pdfIn PDF document text
    • https://xamubamujizej.weebly.com/uploads/1/3/1/4/131483378/kiwunajizolopakize.pdfIn PDF document text
    • http://beslenkofte.com/panel/upload/files/vapewofazotogovefijeza.pdfIn PDF document text
    • https://pilorixo.weebly.com/uploads/1/3/4/6/134689004/demibobozepumenub.pdfIn PDF document text
    • https://ronudinogem.weebly.com/uploads/1/3/1/3/131398573/1870349.pdfIn PDF document text
    • https://nabegesafozap.weebly.com/uploads/1/4/1/3/141343061/bukixeviviselafu.pdfIn PDF document text
    • https://www.silverskilled.com/gateway/kcfinder/upload/files/48979443417.pdfIn PDF document text
    • http://nandishoverseas.com/UserFiles/File/90929281673.pdfIn PDF document text
    • https://xowitato.weebly.com/uploads/1/3/0/7/130776358/nepawowobukor.pdfIn PDF document text
    • https://rainwater.cc/images/uploads/files/77013749864.pdfIn PDF document text
    • https://retixuzekuzexaw.weebly.com/uploads/1/3/4/3/134375726/godikakijeg.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2022032511582248942.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/162121bef382db---84278257251.pdfIn PDF document text
    • https://norin.co.za/YmrXLWy8?keyword=student%20information%20sheet%20ohlone%20collegePDF link annotation
    • http://evola.it/userfiles/files/tukufosopesisafor.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 extracted file (font_00_sfnt_off0000c2a9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c2a9.bin)

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2A9 17020 bytes
SHA-256: 5edc877ac61805b22d83df550e886fe6ebbfe40e69f85648aec4f35fbe377391
font_01_sfnt_off0000ef10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF10 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10727 11096 bytes
SHA-256: 541cf9fbe190ccef1bc1017283438ec2764fb07a7b4f7b017089c37979e08170
font_03_sfnt_off0001209f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1209F 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd

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