Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0c4e62cf522002…

MALICIOUS

PDF

64.7 KB Created: 2021-02-04 02:26:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 38ea3816f64968d758b5b7396fdb238a SHA-1: 35e568d5efd9e11a9a4a1c7e1b36c498fb808a36 SHA-256: 5d0c4e62cf522002f40b904bcb45115627f054d13236e45a76bee94bdcbf9ef6
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of techniques used to redirect users to malicious sites, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jottigo.ru/123?utm_term=oxford+junction+iowa+restaurants PDF link annotation
    • http://gtomishebs.xyz/13138437290i605v.pdfIn PDF document text
    • http://levelupguild.com/pacman_machine_for_salel4n3i.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/bjhhihg/magic_snake_shapes_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/gcMjfIv/woturelosukubupen.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/dgfigjg/amazon_drive_apkmirror.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/ehhgdQe/u_mobile_mifi_login.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/nejdAai/belisunofo.pdfIn PDF document text
    • https://cdn.sqhk.co/julukimesof/cjijlPW/movie_song_quiz_questions.pdfIn PDF document text
    • https://tepikibinaf.weebly.com/uploads/1/3/2/3/132303010/4748825.pdfIn PDF document text
    • http://itverys.space/40280968243o7ko6.pdfIn PDF document text
    • http://fenellalucynelle.info/vaincre_ses_peurskbeis.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/gghajeh/28699973608.pdfIn PDF document text
    • http://logoped-samara.ru/mining_stardew_valleymbiww.pdfIn PDF document text
    • http://copyrighthelp.info/gawimudevomogelanosarbjvxd.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/hiijgw2/49528645235.pdfIn PDF document text
    • http://autolombardpro.ru/platform_revolution_free_downloat7z22.pdfIn PDF document text
    • http://setlyb.online/bluedriver_bluetooth_obd2_scan_tooldcvpj.pdfIn PDF document text
    • https://lifalaril.weebly.com/uploads/1/3/4/8/134883644/1226426.pdfIn PDF document text
    • http://itverys.space/mesiloroxotemaxijofosan2gyn.pdfIn PDF document text
    • http://gloslides.com/boccaccio_decameron_trkepvq5y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB6 5244 bytes
SHA-256: 6fd0c5f224555ead6dc423b0cd5cf22f1e20460c3b73f00a1bd0e037a478fce8
font_01_sfnt_off0000d1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B6 10624 bytes
SHA-256: d0fbbbca026475f6cc3cad45b6fbee4a5557d600a277b397c4ddb6ebb409a87a

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