Malicious PDF — malware analysis report

Static analysis result for SHA-256 d665d3a47e1b7a35…

MALICIOUS

PDF

94.0 KB Created: 2021-05-28 00:04:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f003b636015d20170a043578d252a5fb SHA-1: e54800b99a65ec4aec837a52ff89e363e2107764 SHA-256: d665d3a47e1b7a3503f98a84554b24607f8a842d779155bf82af9959a1900361
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF file contains numerous external links, with a primary redirector URL pointing to a site offering cracked software. Heuristics indicate this is a phishing lure, potentially for malware, and ClamAV detection confirms its malicious nature. The document body, though heavily obfuscated, contains references to 'cracked' software, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 8

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://seumenha.ru/strik?utm_term=miracle+thunder_cracked+_loder_2.89%252Bkey_2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474462/normal_602025db1a6b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424692/normal_601b821e3098c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465704/normal_60673117f34ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5fe80b04db2be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497395/normal_603022522df65.pdfIn PDF document text
    • https://zebaraxofalolal.weebly.com/uploads/1/3/0/8/130813897/1807254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488570/normal_60306d031032b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485710/normal_60584ee243ea6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494429/normal_604f1ab172392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382406/normal_600db5172368a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402948/normal_60354150e8710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496816/normal_6066a0741c435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410016/normal_605e1f9d08c55.pdfIn PDF document text
    • https://fozikubovofow.weebly.com/uploads/1/3/4/8/134897471/6936561815.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/157ff5d0-3c98-42fb-8cde-b2390904b88d/54648811115.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c390265f-f207-43c8-a4da-f35b6e8700d8/pokemon_moon_black_2_download_google_drive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/565061b1-fa44-4a3c-9694-e7c5b9895815/nesco_6-quart_roaster_oven_non_stick_-_stainless_steel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dccab60-af33-42a2-9cbb-85fae61f9116/gtx_660_vs_630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7414fa60-5d23-48c4-94d1-65510a8aef17/qual_o_feriado_de_hoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04252da7-bb58-49f9-b761-35b21a0f44c0/how_long_to_read_salems_lot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f951cc6c-ef0f-4282-aa1e-4faa14c07c59/neighbourhood_of_a_point_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcd11d10-4612-4082-92f9-603e5909c9d3/tipos_de_fuentes_de_informacion_primarias_secundarias_y_terciarias_ejemplos.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
    • 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_off00011a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3C 5564 bytes
SHA-256: c1c887263712434765b9fbca903aaeed28bbf1dc4c9f2245afdcf37c21ff1277
font_01_sfnt_off00012d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D40 11064 bytes
SHA-256: 00158dfe1f17d5cdeaf0eee2143e7381d193569332fb0e013c9f428b54267098
font_02_sfnt_off0001534b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1534B 16196 bytes
SHA-256: ed614ff3ac2e387b3dffe3adc8533a73dd514e171fc201cb60d70b5b5a32e0ff