Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d09030cfdc71e8f…

MALICIOUS

PDF

75.3 KB Created: 2021-03-24 16:31:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e3c799b9ec38124019441ee7c0d8addc SHA-1: 89bf9f000789d749d5f3f4fb5efb91c8b5889e02 SHA-256: 3d09030cfdc71e8f88684a33b815b5b11e314841c5f347e79e4d06eecaa8df0f
126 Risk Score

Malware Insights

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

This PDF document contains numerous external URIs, with a primary URL suggesting a phishing lure related to "coast guard academy requirements". The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=what+are+the+requirements+to+get+into+the+coast+guard+academy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418166/normal_5fe68c6c23824.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/ZariGJ6/78364847596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449599/normal_603ce983b4a19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468540/normal_5fd2c318aa479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427077/normal_602608a27f7b2.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuwutitaw/Rijhehe/galaxy_shooting_sky_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/Sry7Pgj/bukimumiwokodose.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/hCjcYge/48122177577.pdfIn PDF document text
    • http://dosubodanes.mypressonline.com/bitwise_operators_in_embedded_c.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/hzJgfqc/virus_war_space_shooting_game_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_6057d92cde26a.pdfIn PDF document text
    • https://cdn.sqhk.co/pikuworano/bPiJRjc/40087362652.pdfIn PDF document text
    • http://jesofoma.getenjoyment.net/56018260726.pdfIn PDF document text
    • http://votutatiturapat.22web.org/fasting_every_other_day_weight_loss_results.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lazubabalitun.epizy.com/carnivores_ice_age_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b92255-2199-4b77-b65f-5f7b04735660/55582586237.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/feiertage_aargau_2020.pdfIn PDF document text
    • http://lijulipewagikev.rf.gd/calculus_differentiation_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11189693-0b4a-46c0-8278-76e985bef899/17_day_diet_recipes_cycle_1_lunch.pdfIn PDF document text
    • http://pepagipil.epizy.com/florida_residential_lease_agreement_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bc8c651-550a-448c-b00b-2c4c1fd0bad8/in_the_heights_original_cast.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/geketaradol.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_off0000e715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE715 5564 bytes
SHA-256: e334c22146a6ccb38e89d96adafbac8a5c40e19231dd3c80130646a50a24d224
font_01_sfnt_off0000f9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DD 10916 bytes
SHA-256: a5961fa31c0763e45b99159b452f940ee1f0f1cfb40fa4ffa1ea03e62287b80f

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