Malicious PDF — malware analysis report

Static analysis result for SHA-256 e303c0253ee0fbfe…

MALICIOUS

PDF

94.8 KB Created: 2021-03-15 23:55:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 066e87de619cf8110d701c48a7e05c44 SHA-1: d050b7c70bce0b65a73440c65d5673a8571b11f9 SHA-256: e303c0253ee0fbfe2f6a6c38f68f2717eba1428b14c09ce08c0a09a1f15b8a1e
186 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document's content and structure are consistent with a lure to download applications or access phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wix?keyword=ps+touch+apk+2020+android+10 PDF link annotation
    • https://cdn.sqhk.co/wanadujogo/1YPxwgf/adventureland_tickets_farm_bureau.pdfIn PDF document text
    • https://karifizamazo.weebly.com/uploads/1/3/1/3/131383674/7911371.pdfIn PDF document text
    • https://cdn.sqhk.co/xusawikorut/dgdQifu/tiger_shroff_new_song_2020.pdfIn PDF document text
    • http://rutetasilatigo.iblogger.org/best_biographies_books.pdfIn PDF document text
    • http://wupulij.22web.org/kifidejowinixanoxot.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/hjhjkjg/cruise_excursions_belize_reviews.pdfIn PDF document text
    • https://vusuvokitajize.weebly.com/uploads/1/3/0/8/130874031/2591328.pdfIn PDF document text
    • http://vinorama.fun/kadeborusegudepojorbni.pdfIn PDF document text
    • https://jaweditulopo.weebly.com/uploads/1/3/4/3/134313576/naxedosenamaraxu.pdfIn PDF document text
    • http://gejekixevase.22web.org/wotutavupaxas.pdfIn PDF document text
    • https://zawawileniweja.weebly.com/uploads/1/3/5/3/135317922/4188227.pdfIn PDF document text
    • https://kezeminitiwo.weebly.com/uploads/1/3/4/4/134476020/e684ff2cac.pdfIn PDF document text
    • https://cdn.sqhk.co/didowaba/i0Mvyhb/i_love_you_cg_film_song.pdfIn PDF document text
    • http://on24-system.club/new_yorker_magazine_cover_december_2020u1q7u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_e1ceb1f6054a4fdeaecb428aa01e76c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gurafoga/lean_on_me_emiway_bantai_song.pdfIn PDF document text
    • https://9fc80a0e-b25b-4135-afeb-9811a1ea6bf8.filesusr.com/ugd/91e123_4d75d57c26e64f278835e6180a2b039a.pdf?index=trueIn PDF document text
    • https://2ed821ec-8078-4e74-b11b-c5cec6a88262.filesusr.com/ugd/65e777_5db91fc522654c07a0a75413d7513f0e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/70730612907.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/diwali_greeting_templates.pdfIn PDF document text
    • http://fujalur.epizy.com/zelovexetosamiw.pdfIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_5902b8518bca4c968cb32b752ce59d9d.pdf?index=trueIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6C 6384 bytes
SHA-256: 25c0bba19f432c36329fcb92034f94dd10b488a4dce69aacc8c0eb5d101bf100
font_01_sfnt_off0000fc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC23 5520 bytes
SHA-256: dc28e7a81f42c67da599646cee88df34609a07b1e06ce68c342b51e164d612df
font_02_sfnt_off00010eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAB 6340 bytes
SHA-256: 58765afbf79dfac18aa2be5657ba4048cf3b195f9206c7e7e4c9fcdb971a68cd
font_03_sfnt_off00011e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E37 8876 bytes
SHA-256: 2e1adda6e5054bf173d4f90f13fcfa54c6b0dafbe9eee2aee7738b8548823164
font_04_sfnt_off00012e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E22 12668 bytes
SHA-256: 7c05029a5069ed2638ac8d76627b7b950d90f2e111603a62eed937fdf7bf917f
font_05_sfnt_off00015642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15642 16328 bytes
SHA-256: e8dcb7690f3aad1b9065387cff272ca9a76ca650f3391b9d5d9a81288055c1c1

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