Malicious PDF — malware analysis report

Static analysis result for SHA-256 03396465e9537bc3…

MALICIOUS

PDF

85.3 KB Created: 2021-03-21 02:12:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 67c24361d3e74f3390e4653e5ee4e45c SHA-1: 9c0b96f3ca4373ad5b81b8844f095f57cf7667f0 SHA-256: 03396465e9537bc3bc0458e4c36e0a8b23f2d70ed8779a9907537f037708f557
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9993

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://dugedepap.ru/aws?utm_term=best+scroll+saw+blades+for+beginners PDF link annotation
    • http://vevolim.iblogger.org/29995421643.pdfIn PDF document text
    • http://kemobot.22web.org/anfotericina_b_mecanismo_de_accion.pdfIn PDF document text
    • http://kixogabes.22web.org/temademul.pdfIn PDF document text
    • http://leraxedosu.22web.org/27968421445.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/tufuzufagefiwexejikowe.pdfIn PDF document text
    • http://toximakuvox.iblogger.org/46556163891.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/what_is_a_common_service_oriented_architecture_protocol_soap_vulnerability.pdfIn PDF document text
    • http://devovonabukuzim.66ghz.com/calculus_early_transcendentals_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_3e720f8527cf4eaaa06e62044e1ec915.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cf016c6-7e89-422e-bc49-e343f416795f/77927037468.pdfIn PDF document text
    • http://bomesesif.epizy.com/tiwale.pdfIn PDF document text
    • http://solezod.myartsonline.com/aislantes_y_conductores.pdfIn PDF document text
    • https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_b8ed143a544644269dbd56cfc997f7fe.pdf?index=trueIn PDF document text
    • http://wifudozakiteg.epizy.com/90080243130.pdfIn PDF document text
    • https://3176e400-c268-4dc0-8d69-08eae86937f8.filesusr.com/ugd/ea2f88_467fdf165b6b4192b03e05268f936cd8.pdf?index=trueIn PDF document text
    • http://zeduxutebepirob.epizy.com/58507592783.pdfIn PDF document text
    • http://taxifegizuni.epizy.com/ponelakizowiragonofokaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2333c06d-a468-4799-8980-59c863ea07f9/samsung_rf323tedbsr_owners_manual.pdfIn PDF document text
    • https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_3d38ff7b6b824a49921baa70ebc52939.pdf?index=trueIn PDF document text
    • http://duvowukuvemilo.epizy.com/what_causes_a_diesel_car_to_lose_power.pdfIn PDF document text
    • http://junorijuzijipu.rf.gd/zamopopidupaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a173f85-39a4-430f-aa45-06eed33a1506/how_to_store_frequency_on_baofeng_uv-5r.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31666b81-bb9e-4359-88c6-614ca0de1ae0/bissell_little_green_pet_instructions.pdfIn PDF document text
    • http://gujusul.epizy.com/do_tanning_beds_feel_hot.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_off00010ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE9 5472 bytes
SHA-256: 38269de0f5d951ef31aa9cc4ba36df79de93bc9a89d611f0d645ed9593fdaea3
font_01_sfnt_off000121a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121A9 11332 bytes
SHA-256: 51164410fc29dfc54fdd373c979adb64af0618af8fd916730168f4b6b3ca58ed

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