Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb0f7700e2b4abd2…

MALICIOUS

PDF

86.8 KB Created: 2021-03-12 19:35:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 3a9de49097b4850732b448dab3a09291 SHA-1: 5d22420af07030b04bb6f204badcb316cf6f5e45 SHA-256: bb0f7700e2b4abd2c36fe3b0f76a4a25e9725ed53970d57540b538851f7de7e9
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a notable one pointing to 'bologen.ru', suggesting a lure to a malicious site. The PDF's structure and the presence of external URIs indicate it's designed to redirect users to potentially harmful content, likely for credential harvesting or malware delivery.

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://bologen.ru/award?keyword=cours+d+automatisme+pour+debutant+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408993/normal_5fefc8cc5d15d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480886/normal_5febc23cb509a.pdfIn PDF document text
    • http://zurufarovosu.iblogger.org/76056549269.pdfIn PDF document text
    • https://cdn.sqhk.co/goganededem/Eijhjia/scary_movies_coming_out_in_september_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404990/normal_5feb0b68db837.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/gdTljcm/19648162231.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367941/normal_5ffeacb553409.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/cjbjepr/jojuvixivoxisenesutapeb.pdfIn PDF document text
    • http://wuvilorilete.22web.org/investigator_brochure_template_medical_device.pdfIn PDF document text
    • https://cdn.sqhk.co/kulamogo/efBidgc/raceroom_racing_experience_track_list.pdfIn PDF document text
    • http://xalisuvo.22web.org/wow_8._0_assassination_rogue_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417652/normal_5ffda90c3dd4e.pdfIn PDF document text
    • https://cdn.sqhk.co/rosivapixove/hh6fjhI/xiwutobuxurirokumodopuxil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5479c0db-6ef9-4759-ba5e-64a9f0eb8075/samerideramiv.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/que_es_el_taller_de_lectura_y_redaccion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d2269a-6b5c-4667-9015-d5047691132f/54002221326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f30bf520-5566-469a-8417-abfea4a6eef3/how_do_i_stop_my_rv_ac_from_freezing_up.pdfIn PDF document text
    • http://xajalad.epizy.com/pdf_auto_portrait_landscape.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/akali_jungle_guide_s9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/029b2219-8650-41e6-97e4-51f22838a199/dias_feriados_del_gobierno_de_pr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f6cef6a-2cf2-44ad-a1af-b9aef08497b3/what_is_a_sentence_for_daydream.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/72031494883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5dff8bf-f20c-41ec-b4d7-c16f1b612cd2/43461923537.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/zibanebiwisisuzadadero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/338c84b4-cdb1-40ed-afdc-1d3a4b23012b/which_is_the_best_wii_to_buy.pdfIn PDF document text
    • http://dasubaweno.rf.gd/80691539522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7475af4a-e430-4791-8ba4-b3a50c9eedd7/whats_the_difference_between_my_cloud_and_my_cloud_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b9dbc7c-d9ae-45e7-b760-554183698897/gabufiwenexajoditujo.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_off0001115a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1115A 5200 bytes
SHA-256: f06d9a6437562fcbab5472724ea45302e798dd53ee40366337c635bea76c4516
font_01_sfnt_off000122e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E7 12968 bytes
SHA-256: 8af2a63d60e4bbdbc034301445c5b0a9c0ad626dc2da3c3b08430e3e4d569f89

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