Malicious PDF — malware analysis report

Static analysis result for SHA-256 96cde00bf1b20e55…

MALICIOUS

PDF

68.7 KB Created: 2021-04-03 21:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 02bd37e42be0a4e8a762f1c509229972 SHA-1: c355c7b6bdc55631ee2d66e4c15a6f728a0fefb7 SHA-256: 96cde00bf1b20e55616f9a84385ec4d7f6793ad165271546efe80035a3491f63
126 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 URLs, many of which point to disposable domains and are structured as link farms, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing by impersonating a user manual to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/wix?keyword=solaredge+hd+wave+user+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426408/normal_60170dd6ea5d8.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuravaxoxi/VjchHok/candy_crush_soda_saga_download_for_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/ghako94/solofivimufenesetutife.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380090/normal_5fce896715d68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366653/normal_5fe01f3cc1a19.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/iaQKhfW/wozijejerukekogife.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://itclick.pro/parallel_structure_worksheet_high_schoolqbbhl.pdfIn PDF document text
    • http://sekijad.iblogger.org/html5_video_blob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453333/normal_5fcd9d9bd75cb.pdfIn PDF document text
    • http://jilet2.club/wiverimixoxipuwixawozedova9zx.pdfIn PDF document text
    • http://kreativoblako.com/fagor_pressure_cooker_instructions_rapid_express02330.pdfIn PDF document text
    • http://itfamily.pro/13254245755z8dfz.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/e4qge2Z/taxijalizu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://furamexexi.rf.gd/lojexalizizenu.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/34672746303.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/jonilujitawad.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/how_to_find_number_of_atoms_in_a_mole_of_a_compound.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/encyclopedia_judaica_vol_5.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/vodafone_mobile_wifi_r216_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/woweronepazafesilibodomul.pdfIn PDF document text
    • http://gufobipadu.epizy.com/free_articles_worksheets_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/zisewux.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_off0000d04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD04C 5496 bytes
SHA-256: 06c9049c5035b36031fe1bfafa11a9eeff78a411f4cb4200df790d9761019493
font_01_sfnt_off0000e2e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E4 10244 bytes
SHA-256: af06bdbab50e380f16a99fe7c127f36abed8828e98f511f000c03ad7a8e1f13e

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