Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee040537a4f18dfe…

MALICIOUS

PDF

87.9 KB Created: 2021-03-13 17:34:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ca7214ae7442a2445432739dd6a82ebd SHA-1: 951b5bff9b6535c8a47fcbc405986cded056271a SHA-256: ee040537a4f18dfe63483416772e366f713d79e37a4f543406ad0d8de6713da1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/strik?utm_term=remember+your+roots+define PDF link annotation
    • http://mists.space/marketing_planner_job_descriptionze0g8.pdfIn PDF document text
    • http://wedasuf.getenjoyment.net/jodorolixujid.pdfIn PDF document text
    • http://yourlivehelp.com/windows_8._1_64_bit_activatedqh7pl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f86d09d-454b-4f0b-a75b-51970d2a0266/xaweluxuwijux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e8f6cb2-6b1e-400c-8029-99552792b01e/flysky_fs-i6x_ibus_setup.pdfIn PDF document text
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_30353c378b394f73866b9e38fa14412c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d992bd89-7342-437f-9d98-08bb605991d1/the_tipping_point_malcolm_gladwell.pdfIn PDF document text
    • https://28932ed2-21d9-4123-99cb-fcff0aac4472.filesusr.com/ugd/cc089a_882b0b5906524f3aa781b30362c0f1f0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/99db5f10-d272-4544-a3a4-97aaa250fe75/63056929589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a10c5ed-e3e5-4c0f-abf5-7f98268beab4/69460645340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ab677f-83a2-4b73-9652-f803aa466bf8/34598556108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe679413-68b9-4b6c-99ad-a949475c975e/integral_calculus_examples_with_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b876c98-0c34-48cc-b4ab-60b5ca93c90a/what_are_the_5_different_love_languages_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/826e9516-d117-4862-934d-79ca87dcc28b/delta_sigma_theta_membership_intake_process_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/416a3fdf-f304-4bc8-b132-6a0fbeb5608c/zoom_h5_vs_h6_for_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/935b5f90-6b0e-40ea-b6b7-aae545d31cbb/21640108604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce0269b9-0c08-47c2-95b0-93706814fff6/what_pan_do_i_cook_a_ham_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/036ec19a-f496-4e59-8bfd-00baf00b01af/physics_for_scientists_and_engineers_4th_edition_workbook_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d62ceec-523f-4c28-af0d-0c606c77ee2e/agilent_33220a_price.pdfIn PDF document text
    • http://lipeporo.onlinewebshop.net/dyson_big_ball_animal_2_upright_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/141e2aec-1c6f-42a1-ae6f-0406b5bd46dd/toms_guide_printer_reviews.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D3 9204 bytes
SHA-256: 994f84ad907498a865a360d60ecabb38aaafc6a3fe7cdd56a49594b3db3efe5e
font_01_sfnt_off0001180f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1180F 5060 bytes
SHA-256: b8d326e469d7439c4a3ff106ca875ef2663fcb3adf03cbdc996095db4117cdab
font_02_sfnt_off00012936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12936 11568 bytes
SHA-256: f5eae4571aa1525f33cc43ec826967927d8ae9c5cc15e1b88a2a7d14c6d8dac6

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