Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e11d18b14ddeeff…

MALICIOUS

PDF

68.1 KB Created: 2021-03-21 04:11:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 7216bbee537f86acb287b12047b5066e SHA-1: cce94560cfecd0fb8f48712ab8b9b7733be8b43b SHA-256: 6e11d18b14ddeeff525d1ea36a05bc15b57c6f09c6755c6e8494a1c62b722fd8
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The primary URL, 'https://ponafet.ru/wix?keyword=colonial+heights+middle+school+parent+portal', is disguised as a legitimate school portal, indicating a social engineering attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://ponafet.ru/wix?keyword=colonial+heights+middle+school+parent+portal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366308/normal_602f0993ad6fc.pdfIn PDF document text
    • https://cdn.sqhk.co/maxegugej/dgeKTjd/video_looper_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/icgh2hZ/wolof_phrases_amour.pdfIn PDF document text
    • http://lovechat24.club/walutafinejikozux0sb3z.pdfIn PDF document text
    • https://cdn.sqhk.co/gubogezemazo/rjaN0do/jifadixiw.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/aSrgdfB/best_screen_video_recorder_app_for_android.pdfIn PDF document text
    • http://trydouche.xyz/create_spreadsheet_on_macbookxllc3.pdfIn PDF document text
    • http://aslixan.com/ciara_i_bet_mp467qko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505159/normal_600025ae48480.pdfIn PDF document text
    • https://cdn.sqhk.co/kakapoxavu/AmgjheJ/gokud.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/5hahcij/83750922937.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_cbd1bbfaf1a7471fa288c9e6d8cf24d6.pdf?index=trueIn PDF document text
    • http://kulekedeziwab.epizy.com/mens_platform_boots_size_12.pdfIn PDF document text
    • http://dabesajunelazul.rf.gd/69002543046.pdfIn PDF document text
    • https://e57d8632-f742-4524-ada6-9cdf759d9f13.filesusr.com/ugd/b0cb2d_f3e67cee694b42a7a8877ec4843b8385.pdf?index=trueIn PDF document text
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_6cdc6f617b34426ab7655d9a7f6c6504.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6E 5392 bytes
SHA-256: c777a0842b86e8ca025841cac2a83934173ef5e4b9de235655457e666071a6d6
font_01_sfnt_off0000de95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE95 10796 bytes
SHA-256: c9104112ebe7ee036bd33756c09cf8bebb14a30b719ddfa72782d6b7aacab770

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