Malicious PDF — malware analysis report

Static analysis result for SHA-256 c52ceeab918a5291…

MALICIOUS

PDF

84.4 KB Created: 2021-05-14 06:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: fa10ccfc339e897ceec42ef447232e19 SHA-1: 6e8e97d606d194538f491dc71d2c85a446093d7d SHA-256: c52ceeab918a52919b162be38340f57cc783cbe676acac933e7c9d122563cf0f
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure referencing 'frozen 2' lyrics, which is a common tactic for phishing or malware distribution. It redirects to an external URL, 'https://maypoin.ru/strik?utm_term=what+are+the+lyrics+to+into+the+unknown+frozen+2', identified as a potential SEO redirector for phishing. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or a trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://maypoin.ru/strik?utm_term=what+are+the+lyrics+to+into+the+unknown+frozen+2 PDF link annotation
    • https://cdn.sqhk.co/folamudoj/gjbdlP8/easy_to_use_smartphones_for_senior_citizens.pdfIn PDF document text
    • https://cdn.sqhk.co/fudixaxogub/oG9hchj/old_rock_and_roll_radio_stations.pdfIn PDF document text
    • https://cdn.sqhk.co/vibejimipu/gghgjeG/florida_state_driving_test_study_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/serutaja/hjB0ihi/cyberghost_premium_free_apk.pdfIn PDF document text
    • http://gonunimob.iblogger.org/47707163382.pdfIn PDF document text
    • http://feludekinopotas.scienceontheweb.net/energias_renovables_chile.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/hMie5jg/93993543717.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/jg2FVja/samsung_level_app_ios_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/y8ieid8/switched_at_birth_movie_2017.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/gofilafixu/fidawulijupewisijaz.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/79126207039.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/panasonic_lumix_fz_2000_test.pdfIn PDF document text
    • http://befabeme.epizy.com/how_to_install_kwikset_powerbolt_2_touchpad_keyless_entry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/972d3e24-0d41-42c8-9a05-647787419ce3/71006109882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1911167e-6ce4-48ec-86d0-0b5c944ec199/how_do_i_fix_the_tension_on_my_exercise_bike.pdfIn PDF document text
    • http://malejubu.myartsonline.com/adyashanti_libros.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28bc087b-aff3-444f-8a88-f9b0ba8c8db4/how_much_to_ship_fedex_international.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e601aaf-f47e-4e6c-9958-53939fc29cb0/dell_0kwvt8_motherboard_max_ram.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0D 5424 bytes
SHA-256: 82eabed85077b2abc5a71ce5ef440222221673078016a63d00af98d908948dd7
font_01_sfnt_off000101a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A4 13516 bytes
SHA-256: e41c4889fabd0048f0cc5e3f92bd04d1ef0e49a8e10659883b3fe107f76e269c
font_02_sfnt_off00012bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BEF 16748 bytes
SHA-256: fb95f6af8f23b2b48f52c5c91b61f249cebad812ff437e8bae04622326582278

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