Malicious PDF — malware analysis report

Static analysis result for SHA-256 9455b03547227911…

MALICIOUS

PDF

55.4 KB Created: 2021-03-02 23:31:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 832656cb223c44f7cf8b01cc5fc8b702 SHA-1: e68875012afcf6c78153ed21b1ba2cd78e004f9f SHA-256: 9455b03547227911bb5bc45ca80a0ffce64039b09d7854cb3b441c7e506817c7
124 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, with at least two pointing to suspicious domains, suggesting a phishing or malware distribution attempt. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further indicates a link farm structure on disposable hosting, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9186

Heuristics 4

  • 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
  • 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://pelibifir.ru/award?keyword=polaris+360+pool+cleaner+hose+assembly PDF link annotation
    • http://zitokujamu.mypressonline.com/7879984577.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/ahgsiik/22475034321.pdfIn PDF document text
    • https://cdn.sqhk.co/goronikel/qihgdjc/dironarewofagiruduladugi.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/Ogjifhd/60_keyboard_yellow_switches.pdfIn PDF document text
    • http://timinome.getenjoyment.net/govejapar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417543/normal_601f6434a353e.pdfIn PDF document text
    • https://cdn.sqhk.co/jesuzedavoti/ifja0ha/talking_george_the_giraffe_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/1QJHNHv/35278975397.pdfIn PDF document text
    • http://domainlimax.xyz/how_to_charge_cobra_microtalk_walkie_talkiesddtnh.pdfIn PDF document text
    • http://doordash.fun/ncert_solutions_class_9_physics_motion2194v.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/rabewiruzitewa/best_islamic_quotes_from_quran.pdfIn PDF document text
    • http://mijovutotukedes.onlinewebshop.net/what_are_the_seven_rivers_in_africa.pdfIn PDF document text
    • http://bajekixizosi.myartsonline.com/miseluz.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/fameduxumema.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/aroma_digital_rice_cooker_manual_10_cup.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/67538520809.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/pmbok_guide__sixth_edition_and_agile_practice_guide.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4CA 5876 bytes
SHA-256: 02fed2388d9a444fb998a048915d189f161f1f55775c95545c718c95dfa9921e

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