Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd4594fcd0f513a…

MALICIOUS

PDF

79.8 KB Created: 2021-03-19 07:59:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1b9badb330ebd7fec6f8cf9875f471dc SHA-1: 48c21483b400f301d8a828e1c67830d49afc5e7b SHA-256: ccd4594fcd0f513a3999a63c61e8d41f9e5958671fdb663af2ab0f80ef988d05
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9994

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://mezovuduw.ru/123?utm_term=sabwap+latest+south+movie PDF link annotation
    • http://pamesiso.22web.org/40442558283.pdfIn PDF document text
    • http://rotukefune.getenjoyment.net/vutifixerisatomaponesi.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/how_do_you_adjust_a_refrigerator_thermostat.pdfIn PDF document text
    • http://mixezitubut.mygamesonline.org/the_power_of_kabbalah_free_download.pdfIn PDF document text
    • http://palupalukagu.mygamesonline.org/how_to_find_the_mass_of_an_element_in_a_sample.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/le_guide_culinaire_amazon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuganireriwem.rf.gd/loctite_648_msds_sheet.pdfIn PDF document text
    • http://vijesir.rf.gd/zuzageke.pdfIn PDF document text
    • http://dikefesuzu.epizy.com/63192343094.pdfIn PDF document text
    • http://wirileso.epizy.com/83859197029.pdfIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_6b9303ebb47841a2a8072e46fa160bb7.pdf?index=trueIn PDF document text
    • https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_b9bc68cc28374115be5bea811afbf3ca.pdf?index=trueIn PDF document text
    • http://karatufi.epizy.com/how_to_replace_the_hose_on_my_shark_vacuum.pdfIn PDF document text
    • http://pudosuvosav.atwebpages.com/kaxijol.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/88597187204.pdfIn PDF document text
    • https://f38be386-5799-403b-9303-fb121113655a.filesusr.com/ugd/6f1aa7_c80f830646df441483578fe36c750d29.pdf?index=trueIn PDF document text
    • http://lagokatu.epizy.com/88012357923.pdfIn PDF document text
    • http://duwuneloragupi.rf.gd/wemedovigolimur.pdfIn PDF document text
    • https://8d928d4c-4e32-4dc6-8093-d383c90b3cca.filesusr.com/ugd/b5d49c_467c3f950b3b454b934ddd9ad5adf88e.pdf?index=trueIn PDF document text
    • http://sejabozewilobog.epizy.com/troy_bilt_2800_pressure_washer_carburetor.pdfIn PDF document text
    • http://pumugotodag.epizy.com/broadsheet_brunswick_street.pdfIn PDF document text
    • https://a43ab9c2-5efb-4cee-ac06-b782a0f5e207.filesusr.com/ugd/4826f5_6ac66d1181af43ae9eadc3ad4871487e.pdf?index=trueIn PDF document text
    • http://jevoneloz.epizy.com/tomekupixip.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_off0000f93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93C 5356 bytes
SHA-256: 4572bfd503ac7e60aa2b56d4e6180db8b0fb2b9804ac7a1899f1370158884dd0
font_01_sfnt_off00010b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B62 11412 bytes
SHA-256: 0802988a824ffeb3a22c535f5521855fa278bddc6a2343c720c90ca4c8f19594

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