Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d8ec0600fe6243b…

MALICIOUS

PDF

72.3 KB Created: 2021-03-10 01:07:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: baa6f24dcd5859cb4aa469b3256dbac4 SHA-1: 68abb7de251620b23df93dca2ac3c3ee292ddf75 SHA-256: 6d8ec0600fe6243b781f6a73c28fa5e6c227200d1ef61941acc9b3d0db9d9890
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded links, identified as a 'PDF link farm', with many pointing to external PDF files. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically a phishing or trojan. The presence of a 'download button' heuristic further supports the lure-based attack pattern. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to download further content, likely malicious.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/aws?utm_term=how+to+convert+jpg+to+icon+image PDF link annotation
    • https://cdn.sqhk.co/borefigux/eidgeQf/download_devil_ninja_fight_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/iZjjeft/bee_mobile_eg_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/5iimjfF/drag_racing_near_memphis.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/gdNgfZG/46231714129.pdfIn PDF document text
    • http://zathkatow.xyz/taittiriya_upanishad_lyricsfwcou.pdfIn PDF document text
    • https://cdn.sqhk.co/vekosozob/bfQjjBN/how_to_bake_a_potato_in_oven_fast.pdfIn PDF document text
    • http://blankid.ru/94517156100iyq6n.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/gcvigii/words_crush_hidden_themes_magician.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/TieChfh/luvon.pdfIn PDF document text
    • https://cdn.sqhk.co/mivuxakadu/Gjggdid/ramezibinoragakopixawe.pdfIn PDF document text
    • https://cdn.sqhk.co/ropimipaf/hhRgggg/tower_defense_king_cheats_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/nokikijun/zijgcFS/lusugen.pdfIn PDF document text
    • http://italywow.info/ann_patchett_state_of_wonder37twn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc3523b7-cd2e-41c2-8d02-8a3814636c7c/the_electric_kool-aid_acid_test_audiobook_free.pdfIn PDF document text
    • https://4b0cdf75-2e42-4830-99f1-bbdbaec3f661.filesusr.com/ugd/891219_954579a2d3bd4eeca005a881e4834358.pdf?index=trueIn PDF document text
    • https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_783883ef5c7a4e7ba459effb726f07f7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ff2a012-c335-4ecb-9a0f-fe4ab954ceee/87831946803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec61c98-2fff-475c-b6ee-f12372040fc0/63003543727.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000deaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAA 5232 bytes
SHA-256: 96de326c30bf3ec0a94ff52baa36ed2daee3dd2f179f35398665f7e3f677561e
font_01_sfnt_off0000f07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07C 10316 bytes
SHA-256: dccc6da440ce48acb138f8593a5c480ba53c8bc4b3db878811b48d89f0522034

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