Malicious PDF — malware analysis report

Static analysis result for SHA-256 2242c0610ced4e7f…

MALICIOUS

PDF

68.2 KB Created: 2021-02-17 04:45:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a0923603814604259a70c82470787437 SHA-1: 328b3c1da93f7a8841b3f0e6ac40fa7b70c7b0cd SHA-256: 2242c0610ced4e7fb5bf74e14f144e238ec62c2a4f1095efd1f57e238437632d
184 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure, specifically pointing to a URL related to a 'coleman 5500 watt generator manual'. This, combined with the ML classifier and ClamAV detection, strongly suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to contain metadata related to the generator manual lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/strik?utm_term=coleman+5500+watt+generator+manual In PDF document text
    • http://fishland.store/donumoxobokidese59o8j.pdfIn PDF document text
    • http://kijorifoweb.22web.org/angry_birds_mod_apk_star_wars.pdfIn PDF document text
    • http://creditactive.info/download_hammer_jumping_mod_apk_android_1knpkz.pdfIn PDF document text
    • http://farvestnn.ru/french_learning_book_freea1ywc.pdfIn PDF document text
    • http://sluzhba1.net/degozuxapazamvh0o.pdfIn PDF document text
    • http://netzamka.ru/cognitive_distortions_spanish0fhv2.pdfIn PDF document text
    • http://izzzaaa.space/chronicles_of_darkness_conditionsogv0j.pdfIn PDF document text
    • http://mebelintera.ru/nazezvcpwz.pdfIn PDF document text
    • https://dadotetixaj.weebly.com/uploads/1/3/4/4/134404583/5584048.pdfIn PDF document text
    • http://salonvarna.com/64206171684mxx0n.pdfIn PDF document text
    • http://nesobaka3.xyz/mabisedudigewavoroditumit5beh0.pdfIn PDF document text
    • http://jonusawa.iblogger.org/cue_card_topics_2019_with_answers.pdfIn PDF document text
    • http://copyrightproblem.com/gidefopakijolafn105n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/divikufifir/critical_thinking_questions_and_answers_for_nurses.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/because_i_m_stupid_full_song.pdfIn PDF document text
    • http://xoradodi.epizy.com/88188400088.pdfIn PDF document text
    • http://kosirokuki.epizy.com/finding_the_perimeter_of_a_semicircle_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/django_template_original.pdfIn PDF document text
    • http://naremijex.epizy.com/babua_kahe_rota_hai_video_song.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_off0000cd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7C 5088 bytes
SHA-256: 0dbc0c805a892223d92e095bb6e09002418b569a38e2b279f49501832e856e25
font_01_sfnt_off0000dec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC0 10836 bytes
SHA-256: 14c14119636c589f04ea5b48f29559dadbeac6d2d37e532c047008d1e8ac1072

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