Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d01d415d2c751f…

MALICIOUS

PDF

68.4 KB Created: 2021-03-18 16:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 1bb6f9da235c1df6f7b107e069776f3e SHA-1: 489f76ab1bf9f6b704968a642ca0f59bb4502a35 SHA-256: a2d01d415d2c751f72b1f3556d5794765dbe6d640a1dc997864b0f6e5a1f7036
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious content. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing attempt. The primary URL, 'https://nipisod.ru/wix?keyword=m+box+movie+download+apk', strongly suggests a lure for downloading software, likely malicious, under the guise of a movie download.

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
  • 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://nipisod.ru/wix?keyword=m+box+movie+download+apk PDF link annotation
    • https://cdn.sqhk.co/nigalasiline/ficghje/jonafok.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/canon_mp160_printer_ink.pdfIn PDF document text
    • http://4bochki.ru/how_to_replace_belt_on_oreck_vacuum8ss4t.pdfIn PDF document text
    • http://organic100.fun/febuxuzaxipufoxanepen8kcx0.pdfIn PDF document text
    • http://fobativ.mywebcommunity.org/simone_de_beauvoir_essays.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/can_i_speak_to_someone_at_the_post_office.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/s1dgegj/gedadoba.pdfIn PDF document text
    • http://roserubusigiwij.mywebcommunity.org/ncaa_division_2_basketball_regional_rankings.pdfIn PDF document text
    • https://cdn.sqhk.co/kejopala/Jighhib/fukebejilofigipijodusolo.pdfIn PDF document text
    • http://gupirigugorixuf.sportsontheweb.net/approximation_error.pdfIn PDF document text
    • http://monstergym.ru/bopovizesotavaxumeq9dwp.pdfIn PDF document text
    • http://falutaburifa.iblogger.org/buyer_s_order_car.pdfIn PDF document text
    • http://farozemirig.scienceontheweb.net/fudukeroniguz.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/fadobirak/3d_building_elevation_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/chlorine_elemental_form.pdfIn PDF document text
    • http://wutesejib.onlinewebshop.net/quando_saber_a_hora_de_terminar_um_relacionamento.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/1574852385.pdfIn PDF document text
    • http://tezogaxexinaga.rf.gd/aurum_blade_ex_gem_hack_apk.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/basc_3_srp_sample_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/pip_camera_photo_effect.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_off0000ccf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF6 5260 bytes
SHA-256: 02d56b0faf3f705197cafbf8133eca51085c987803adea94e0c63e466b316f80
font_01_sfnt_off0000dee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE6 11300 bytes
SHA-256: 7c774a3d87048ce2e3691c348f930bf5827a1156862467478210e326ac175d33