Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eadd34344d75541…

MALICIOUS

PDF

83.5 KB Created: 2021-03-25 10:43:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9bf1536b9f01ca674ccc74d0b4215e9 SHA-1: 1ca3c3916c7cb6b75de39757bfd6a3a3d04d34e2 SHA-256: 1eadd34344d75541f793d92eb4c93fa4f3e143287debcd8b8b90e5f85287cd71
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/strik?utm_term=what%2527s+the+most+popular+marvel+movie
    • http://sibatike.getenjoyment.net/math_shapes_worksheets_2nd_grade.pdf
    • http://femonejigajape.mywebcommunity.org/stormie_omartian_the_power_of_a_praying_woman.pdf
    • https://static.s123-cdn-static.com/uploads/4391903/normal_5fe534e239047.pdf
    • http://vubitim.sportsontheweb.net/the_vampire_lestat.pdf
    • https://cdn.sqhk.co/busumodofu/dgdMhd2/91914281182.pdf
    • https://cdn-cms.f-static.net/uploads/4392872/normal_6033ea37283a7.pdf
    • https://cdn-cms.f-static.net/uploads/4426280/normal_6023da86587dd.pdf
    • http://kufomabid.mywebcommunity.org/nuxopufoxesuxogig.pdf
    • https://cdn.sqhk.co/posebozej/hhgcsja/rolling_sky_2_fate_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4370987/normal_5fdbdef1b3f8e.pdf
    • https://cdn.sqhk.co/zuzipogowita/hiFxDhj/69966866952.pdf
    • https://static.s123-cdn-static.com/uploads/4448980/normal_5fe3e8b132705.pdf
    • https://static.s123-cdn-static.com/uploads/4470540/normal_5ff8993181370.pdf
    • https://cdn-cms.f-static.net/uploads/4455672/normal_6058fa5c83bf6.pdf
    • https://static.s123-cdn-static.com/uploads/4417519/normal_5fe3e25f0bd17.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kutoxinupuroxo.onlinewebshop.net/jordan_normal_form.pdf
    • https://2c8134a4-d865-4da1-8961-c755d7242105.filesusr.com/ugd/6dcf04_e093d4b7ab8e4525ae28a447bfee2578.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4a4b58a7-add0-41bf-9b75-5f28481499fc/93504565657.pdf
    • https://43cb2d18-1589-43a7-b1c5-fe1278e1c76d.filesusr.com/ugd/370b54_61e9b1f5ffc44f7bb027f6b8e42668fa.pdf?index=true
    • https://uploads.strikinglycdn.com/files/100f46a2-96d1-4978-8232-c301abd0c2ac/99301627753.pdf
    • https://uploads.strikinglycdn.com/files/17cd5e0d-25be-4676-ac49-d5211e110075/sumitizujed.pdf
    • 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_off000105e0.bin
0b2070c668814fc80593dbc2b2ce932eb3dc08b1f4c2c023d2e301dcfea7fbfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105E0 5164 bytes
font_01_sfnt_off0001175a.bin
1a1b4f94cbfa97b95cbc546bc1d16d7d9869ccfeb365e79600549192fd37fa6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1175A 11796 bytes

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