Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c318e5b0d531cf…

MALICIOUS

PDF

79.1 KB Created: 2021-05-14 03:04:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 80960c86f0b5497b1cf8d4b43833c092 SHA-1: c845499aaa5c11dd762c8e7899e15c8e7b081e8c SHA-256: 80c318e5b0d531cf153217252d40e12c074fd4dbc4dcc8a4bf77b18241d8368f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and utilize UTM parameters, indicating a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to trick users into downloading further payloads or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://dugedepap.ru/strik?utm_term=steinway+baby+grand+piano+for+sale+uk PDF link annotation
    • https://cdn.sqhk.co/mowamukar/ml9havZ/the_world_ends_with_you_pc_download.pdfIn PDF document text
    • https://xavidupi.weebly.com/uploads/1/3/4/7/134723560/bupenujuxukuwisibodi.pdfIn PDF document text
    • http://govnososal.xyz/risidotasisadgjwg5.pdfIn PDF document text
    • http://svoydvalend.xyz/what_is_the_importance_of_sound_energy4ited.pdfIn PDF document text
    • http://ita-bio.space/gosemotolijewekenuhmh.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/bitsat_2020_syllabus_download.pdfIn PDF document text
    • https://vipukawolatu.weebly.com/uploads/1/3/4/4/134486161/9848682.pdfIn PDF document text
    • http://stakingyfi.com/bupemiposopodis955ky.pdfIn PDF document text
    • https://cdn.sqhk.co/botikavanov/jS2hiUu/silver_cloud_inn_portland_airport.pdfIn PDF document text
    • https://rowexajezer.weebly.com/uploads/1/3/0/7/130776500/tanawenenikuseg.pdfIn PDF document text
    • https://sawifotu.weebly.com/uploads/1/3/4/5/134597463/fumuzilafepaxol_xawuji_wagarowupura.pdfIn PDF document text
    • http://pusapev.scienceontheweb.net/saxapabapodok.pdfIn PDF document text
    • http://coupons2020.info/22818557461om0g0.pdfIn PDF document text
    • http://mopowataxix.medianewsonline.com/dotugutodojizexi.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/ejjFjhX/red_ball_4_60_level.pdfIn PDF document text
    • http://lovechat24.club/podisagilesefenixigiweled0c2y.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/ghcigSG/followers_tracker_for_instagram_online.pdfIn PDF document text
    • http://3bureaureport.info/how_did_absolutism_contribute_to_the_french_revolutionpa9bc.pdfIn PDF document text
    • http://itprod.space/kodable_no_loginxnv9h.pdfIn PDF document text
    • http://byseles.xyz/football_killer_passbfcz5.pdfIn PDF document text
    • https://tifomuzaki.weebly.com/uploads/1/3/1/1/131163977/fiwedurenuviwik.pdfIn PDF document text
    • http://reduslim-shopofficial.site/miraculous_frases_de_transformaoai2aw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jujuletofu.onlinewebshop.net/velocity_vs_time_graph_simulator.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/employee_performance_evaluation_template_doc.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/64583155390.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/pusawoxukefozokupatafad.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_off0000f30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30E 5712 bytes
SHA-256: 7810d60295bc92118e068187c0dca1b972632a590159f6473bc7a5257c51d6e2
font_01_sfnt_off000106a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A4 11540 bytes
SHA-256: c00789f003b9af7db6ca83518dd71b3ab158540181e6daad5ccd111fa0579d82