Malicious PDF — malware analysis report

Static analysis result for SHA-256 6062e64c8cd57ff5…

MALICIOUS

PDF

78.1 KB Created: 2021-03-23 19:10:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8b283a8f7abb0a7463f2e38c5111ef33 SHA-1: 1b30a811d7bca9416871873fcffe0a49f1402cb0 SHA-256: 6062e64c8cd57ff542aa08ba2ecece6b7be25fdb6c288ac66b2de800fb9c557d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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 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://botokaw.ru/wix?keyword=blue+eagles+swim+team PDF link annotation
    • http://sigisuzuk.getenjoyment.net/duridagoxil.pdfIn PDF document text
    • http://dutusejutax.22web.org/viworuputobamuduz.pdfIn PDF document text
    • http://jolijivik.scienceontheweb.net/islamic_finance_and_banking_system.pdfIn PDF document text
    • http://felidefewipikig.22web.org/trastorno_bipolar_dsm_5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370264/normal_5ff234c03fa43.pdfIn PDF document text
    • http://zofugef.mypressonline.com/zoxojoponivejamutirikon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365594/normal_5fe43a5715b13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385869/normal_604dc9f10478f.pdfIn PDF document text
    • http://nomokesus.sportsontheweb.net/how_often_does_league_of_legends_patch.pdfIn PDF document text
    • http://pelabinowoguk.getenjoyment.net/59210403530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479673/normal_60458f9561eec.pdfIn PDF document text
    • http://davufemalolaj.iblogger.org/35645935477.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/livowaxakigazonuwudoxugov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xadujagi.epizy.com/brown_eyed_girl_chords_and_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/sigokupivomakimezat.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/annotate_in_chrome_browser.pdfIn PDF document text
    • http://zelogano.epizy.com/making_a_play_abbi_glines_epub.pdfIn PDF document text
    • http://sorisavitekinuj.onlinewebshop.net/what_happens_when_you_exercise_for_30_minutes.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/62699496591.pdfIn PDF document text
    • http://felalosekubav.epizy.com/industry_report_definition.pdfIn PDF document text
    • http://rafelisugamiraw.rf.gd/astrosage_kundli_astrology_app.pdfIn PDF document text
    • http://fefomuk.epizy.com/zolesupajibotukozilux.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/gitlab_ci_template_file.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/lexowewijad.pdfIn PDF document text
    • http://kojosire.epizy.com/nuvopesamotuxajopoliwixu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE699 4716 bytes
SHA-256: 68fa5701dd81e86dbcb7dc88d397e932c1530dd1318a14f62f2a0b19482507e3
font_01_sfnt_off0000f6bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BD 10760 bytes
SHA-256: 11fb8e58036243783ba057dff0965e1148e89f29180dcb904ef844786a2b19b9
font_02_sfnt_off00011acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ACD 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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