Malicious PDF — malware analysis report

Static analysis result for SHA-256 9243c9c1470356ff…

MALICIOUS

PDF

72.2 KB Created: 2021-03-11 14:58:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 80e68bbff3450a58e11b03d618fe4200 SHA-1: 30dae5f09ccd755da4b790afc5ebf838bebc0f8f SHA-256: 9243c9c1470356ff899e3e78ebf5ab9756d8a7e0358dc54181d574883f136d24
124 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8094

Heuristics 4

  • 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
  • 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://ponafet.ru/award?keyword=abhijit+banerjee+books+pdf+download PDF link annotation
    • http://front-glass.space/arma_3_free_maceooxn.pdfIn PDF document text
    • http://about-central.com/center_parcs_sherwood_forest_mapq4co1.pdfIn PDF document text
    • http://matroskin.space/application_format_for_medical_leave_in_collegel749n.pdfIn PDF document text
    • https://pebogifi.weebly.com/uploads/1/3/1/4/131438694/6977872.pdfIn PDF document text
    • https://zoparimunafixi.weebly.com/uploads/1/3/4/3/134336740/geditixefo.pdfIn PDF document text
    • https://sakojokotinij.weebly.com/uploads/1/3/1/3/131379540/2714954.pdfIn PDF document text
    • http://genusttwsr.fun/litaniae_sanctorum_partitionrn2ts.pdfIn PDF document text
    • http://tradestaroffice.com/how_to_mix_fuel_for_leaf_blowerjz8ze.pdfIn PDF document text
    • http://tur8osale.site/5830140157id49u.pdfIn PDF document text
    • http://banquepopulaire-fr.org/lidepujebifjivn.pdfIn PDF document text
    • http://investorlands.ru/sorofimajenabapexir7q6it.pdfIn PDF document text
    • http://sberbank.link/the_goals_of_psychology_are_to_describe_explain_predict_and_control_behaviorq4prp.pdfIn PDF document text
    • https://kipejuxi.weebly.com/uploads/1/3/2/6/132682137/2148510.pdfIn PDF document text
    • https://fixabugodorev.weebly.com/uploads/1/3/1/8/131856934/bigog.pdfIn PDF document text
    • http://scoretdho.best/cohesive_devices_exercises_with_answers0t5d8.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/aswb_masters_practice_testdie6e.pdfIn PDF document text
    • http://salonop.xyz/el_manifiesto_del_partido_comunista_de_carlos_marx_libro_completo41wlg.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/celebrate_recovery_4th_step_worksheet8khvc.pdfIn PDF document text
    • http://fortuneo.biz/steroid_injection_in_back_recovery_time0jk97.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/navoburarovada/46833602186.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/how_to_set_up_business_account_with_usps.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF6 5492 bytes
SHA-256: 00c5720c67a27fa68cf98f3a112dddbcf1e1d9d40be6ad1b1385d05b8356b8c6
font_01_sfnt_off000100ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100AB 10396 bytes
SHA-256: 498785c5d58442636b400809563c8927bd0f17513174cd2c58bfc678c268f944

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