Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f52d16b2f0096b…

MALICIOUS

PDF

72.9 KB Created: 2021-04-07 14:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 080926327aeda7b42503892015337902 SHA-1: 5e11df1abc84e771481bcb45be5a4d6c2cefbeff SHA-256: 45f52d16b2f0096b438a5835b1b3e07541a8b76a7dfe1b1b88cd897e0d9b4566
126 Risk Score

Malware Insights

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

This PDF file is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous embedded URLs, with a primary focus on directing users to potentially malicious domains such as 'nipisod.ru' and 'mypressonline.com'. The document body, though heavily obfuscated, suggests a pretext related to real-world applications of circles, likely to trick users into clicking the deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=where+are+circles+used+in+the+real+world PDF link annotation
    • http://pugisapi.mypressonline.com/78794611543.pdfIn PDF document text
    • http://megopoveguvujal.medianewsonline.com/bgp_configuration_commands_step_by_step.pdfIn PDF document text
    • http://virivuluk.getenjoyment.net/11172766132.pdfIn PDF document text
    • http://trastenmyqort.online/clases_de_sistemas_de_informacion_administrativajpsht.pdfIn PDF document text
    • http://neletaparufo.scienceontheweb.net/acquirer_s_multiple.pdfIn PDF document text
    • http://wegafanu.iblogger.org/83612705262.pdfIn PDF document text
    • http://zelolugo.22web.org/how_to_fold_prima_pappa_high_chair.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://getidevip.epizy.com/eevee_plush_template.pdfIn PDF document text
    • https://148d48ef-a78d-4e34-a4d2-755cfbac042a.filesusr.com/ugd/ccca9b_aec9cd3a07694ac9bd722dbe077c8ff9.pdf?index=trueIn PDF document text
    • http://kepofif.onlinewebshop.net/gatedurivob.pdfIn PDF document text
    • https://5de9ed01-d610-4143-94db-6f998645a8ce.filesusr.com/ugd/1d8bf6_4910a873126347eca23d4a9671c18139.pdf?index=trueIn PDF document text
    • http://pujeriv.rf.gd/43245446402.pdfIn PDF document text
    • http://naremijex.epizy.com/monthly_calendar_planner_template_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ac0460d-36e2-4ea4-9c00-f9911c898820/31077426267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6805b473-8f9c-41b3-bcdd-6198af9cb7f5/how_much_do_scouts_get_paid.pdfIn PDF document text
    • https://e9b66cc5-9289-431c-8f17-6739e1cd2d88.filesusr.com/ugd/c8f33b_f25e6bc77d474d1386e6a5ded28bde31.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f35a4f24-4917-4dce-bd9a-561376774941/98644858096.pdfIn PDF document text
    • http://mezezix.rf.gd/jijus.pdfIn PDF document text
    • https://77bc4ea4-de20-41c0-a463-a5315db628d9.filesusr.com/ugd/2c69e3_928e672a42734526bb55c1a856ac0391.pdf?index=trueIn PDF document text
    • https://19aaccd0-9772-41b6-85c4-be118606641a.filesusr.com/ugd/a12125_e758cc5d7238443e8993ec7b148de83a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8e23acb-9ef9-4a32-bf21-82e28815d79d/how_much_is_a_stihl_461.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_off0000ddd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD2 5132 bytes
SHA-256: f60a05f954df690c73fcd22cc727db6247d5b255b98f3866065e55295edb5bb1
font_01_sfnt_off0000ef54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF54 10880 bytes
SHA-256: b205e5d5b29aa20d2be0fa25d628d51184d0338b1cd233d05fdc5d0d23a98276

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