Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd0b576344e49b68…

MALICIOUS

PDF

67.4 KB Created: 2021-03-15 16:55:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbf2eebed9753ecd13a638078b1a1795 SHA-1: 774a2527ab4b1edc076f94d46f17dc7e19e977e3 SHA-256: cd0b576344e49b683bff39cace367a07efaa5d34de7fea0556a87e35901dc2ae
126 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm designed to redirect users. The primary malicious activity appears to be the redirection to the URL https://mezovuduw.ru/strik?utm_term=panasonic+ag-hmc150+battery, likely for phishing or to serve further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=panasonic+ag-hmc150+battery
    • https://cdn-cms.f-static.net/uploads/4495686/normal_602e44410a122.pdf
    • https://static.s123-cdn-static.com/uploads/4425912/normal_6003f58a6de04.pdf
    • http://logvoz.ru/eckhart_tolle_power_of_now_summary1f1u4.pdf
    • https://cdn-cms.f-static.net/uploads/4369525/normal_5fd7a21eb2edc.pdf
    • http://agentsecure.space/fagor_pressure_cooker_recipes9hx40.pdf
    • http://lamejix.scienceontheweb.net/gotubapafugat.pdf
    • http://itravelgr.com/safosimetezejulexivulawj1cnw.pdf
    • http://fibiver.mygamesonline.org/make_your_own_podcast_intro.pdf
    • https://cdn-cms.f-static.net/uploads/4393358/normal_604387b32b8b9.pdf
    • https://static.s123-cdn-static.com/uploads/4383460/normal_60036e7940981.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://bb491b24-4c81-4ccc-8daa-bf1baeb171c2.filesusr.com/ugd/93c935_b1870ce12243495b9fbeacde653cad53.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d97d7015-2f39-49a6-b3d7-5793c37b8149/zunujixabonapir.pdf
    • https://d0fd53c2-66a5-49f7-a942-a4bfc50892a3.filesusr.com/ugd/11baf9_edcadaf1dfbf4a419cdf5b23bd69e0a5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d09b0bd4-fab4-466a-9cd0-d375828cfa4e/health_care_delivery_in_the_united_states_11th_edition_chapter_3.pdf
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_5813477558364387b9b7a223f5cd5c69.pdf?index=true
    • https://6843e3eb-5573-46e1-90a0-370cfc2b4a0d.filesusr.com/ugd/89b1bc_a320eef569954d1e8e01578d60c4a590.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c532b1e8-4478-4fc9-b12e-4426e80c57b4/74746568132.pdf
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_1dc8f08b6a8e454199129f0f716c516c.pdf?index=true
    • https://5e9816b5-e261-4a84-a5c7-594b6999e1c8.filesusr.com/ugd/eb2f7d_35c6855ef4864e958b93a7c6a6baead5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d745c112-7198-4548-840c-2cf986251fe8/oldest_hebrew_new_testament_manuscripts.pdf
    • https://30383b9b-b26a-44f4-9a26-03873af8f03c.filesusr.com/ugd/fdee49_0633ac9e630f4faea1c1c1647cb17db1.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c812.bin
eed1b6d51286626dd0cd6e5a828d011b778ab5a7f12e008179936b945aa08aad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC812 5772 bytes
font_01_sfnt_off0000dba3.bin
202316c62b3d3e29b972423cc89e473dfdaf73807c22512cda9b3a1afe4f9a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA3 10728 bytes

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