Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2bb86012adf22c3…

MALICIOUS

PDF

72.2 KB Created: 2021-02-09 16:35:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 642841e97af051b209ccaf845f7f2e86 SHA-1: f74fb0fe3ff4d76d68ce9f7757909fd0e1bd10b0 SHA-256: e2bb86012adf22c34fc6ad9ea714835a8797cea80961da15fab3ee744905e81f
194 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://yafferge.ru/aws?utm_term=android+biometric+github In PDF document text
    • https://cdn.sqhk.co/voxoduvi/gjahaii/jump_over_meaning_in_punjabi.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/RwjiEgi/formula_1_2020_pc_requirements.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384029/normal_5fff495dc2d49.pdfIn PDF document text
    • http://pedalini.club/lolita_novelxzw8i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379038/normal_5ff655f12907c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486363/normal_5feb7ac71fe6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409801/normal_6022946fc8421.pdfIn PDF document text
    • https://cdn.sqhk.co/pufuxarabo/faiiieL/wwii_zombies_survival_world_war_horror_story.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/didUghb/hello_ice_scream_scary_neighbor_horror_games.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/rorives/survey_answers_somewhat_agree.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/alexander_rybak_oah.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/22618277771.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/bhabha_atomic_research_centre_vendor_registration_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/denarizokaj.pdfIn PDF document text
    • http://funurebebepoti.epizy.com/risk_assessment_format.pdfIn PDF document text
    • http://bopufadepop.epizy.com/creating_a_budget_spreadsheet_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/40386025052.pdfIn PDF document text
    • http://kamaxunavag.epizy.com/cellular_respiration_summary_worksheet_answers.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_off0000dc11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC11 5060 bytes
SHA-256: 3dd400bb0b082728eb3ab1264bb1e8acc8b6004d662d72b427ec761c9fa38e6d
font_01_sfnt_off0000ed1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1E 11428 bytes
SHA-256: 013a9070c4ef0ca501c7f72c393c4bb32115654cdc238e1e766b4274373873f4

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