Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ae9119d9026e81…

MALICIOUS

PDF

73.8 KB Created: 2021-03-27 16:18:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e9a02b640f50d75b205947f906b17b4c SHA-1: b2ce0560995d4b400a3f28211e8dfa588f9047b8 SHA-256: c1ae9119d9026e81fd9f5efa82ed5bc7da826f27d936e801fcf137a9c728384e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. The presence of external URIs and the 'disposable link farm' heuristic strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://golowaki.ru/wix?keyword=d%2526d+mansion+generator PDF link annotation
    • http://stav-games.ru/942013787031g492.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/fgcymjd/slither._io_snakes_or_worms.pdfIn PDF document text
    • https://cdn.sqhk.co/semoxumid/rGL2Zgj/big_bang_article_for_students.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/hgXNtES/24306884181.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/jin2hfO/mivekogajikude.pdfIn PDF document text
    • http://hellochildren.online/statistics_and_probability_problem_solverbukz5.pdfIn PDF document text
    • https://cdn.sqhk.co/pubisifibuj/iighdjd/newest_call_of_duty_for_xbox_360.pdfIn PDF document text
    • https://cdn.sqhk.co/telupiza/hiifeie/the_wolf_chinese_drama_recap.pdfIn PDF document text
    • https://cdn.sqhk.co/gurudulep/hCjfja4/improper_fractions_worksheet_grade_7.pdfIn PDF document text
    • http://arfesopt.com/why_is_structure_important_in_writing_fiction6i56a.pdfIn PDF document text
    • http://viputixezererej.66ghz.com/xml_stylesheet_language.pdfIn PDF document text
    • http://chunyoo.com/river_road_animal_hospital_columbus_ga8lrrb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tosasip.epizy.com/tudaxobubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8bde1a4-7a93-4a15-b5b8-3f1e426e84c8/night_owl_optics_night_vision_binoculars_ocb400.pdfIn PDF document text
    • http://najaxobefirag.epizy.com/81248979952.pdfIn PDF document text
    • http://dajejumu.rf.gd/carlow_county_council_planning_application_form.pdfIn PDF document text
    • http://salekisaju.epizy.com/50018197312.pdfIn PDF document text
    • http://jedafalakax.epizy.com/weralefijalovonit.pdfIn PDF document text
    • http://repujatadaw.rf.gd/3355008185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f05c8051-f7cb-4d45-b402-a369d7dad306/how_to_find_square_root_on_ti_36x_pro.pdfIn PDF document text
    • http://gawusozuf.epizy.com/47386759915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13730988-083f-41a8-82b1-da40d010d1a3/what_is_act_1_scene_3_about_in_julius_caesar.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

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_off0000e7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B3 4156 bytes
SHA-256: 278cac2e78d1b4950b7c4295bc4000fde350c7c8fc6a349bfdf9917f5098d62c
font_01_sfnt_off0000f5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E2 10612 bytes
SHA-256: 03080dd20e8c6cc10b3ab5097d2be5c1c74f417574d2d83c60a58491127cc2eb

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