Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d14498acf90fea0…

MALICIOUS

PDF

73.9 KB Created: 2021-04-27 06:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6a575e6b030f5738dc280865a59b61a SHA-1: 5dc6d3bbcaf0f1f313d65c18df1e7d7239bbc36a SHA-256: 9d14498acf90fea082d3cac4c270a492ca25177c119743d3adcb00bc35d81d7d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for a phishing or malware distribution attempt. No scripts were extracted, but the presence of an external URI and the overall detection profile suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dafemum.ru/strik?utm_term=how+to+live+like+uncle+iroh
    • https://cdn-cms.f-static.net/uploads/4455901/normal_6055714169a35.pdf
    • http://rexonina.medianewsonline.com/bovakugijevaval.pdf
    • https://cdn.sqhk.co/sekigizakeku/KjiYhgO/kalasifosus.pdf
    • https://cdn-cms.f-static.net/uploads/4388824/normal_602a4de150e38.pdf
    • https://cdn-cms.f-static.net/uploads/4453098/normal_600f461930814.pdf
    • https://cdn.sqhk.co/bisegepamitu/gdjjcSm/jaberutenigu.pdf
    • http://volalagokiva.sportsontheweb.net/alice_in_wonderland_ebook_download.pdf
    • http://zipafaxelati.sportsontheweb.net/35940672749.pdf
    • https://cdn-cms.f-static.net/uploads/4413244/normal_606d1853768d8.pdf
    • https://cdn.sqhk.co/bibolaned/xtgfjiS/nukigukofuwu.pdf
    • http://sifimomikev.sportsontheweb.net/widerukalepoj.pdf
    • https://cdn.sqhk.co/kulobuwaxegu/akTgeid/20436118067.pdf
    • http://guzoseta.getenjoyment.net/advanced_java_multiple_choice_questions_and_answers_msbte.pdf
    • https://cdn-cms.f-static.net/uploads/4443371/normal_6026cfa23e164.pdf
    • https://cdn.sqhk.co/fusuzogik/gi1ibYY/hanayama_puzzles_level_6_quartet_solution.pdf
    • http://timinome.getenjoyment.net/tanda_dan_gejala_bronkitis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a5539834-2865-47a0-b9cd-e50eaf6b2bbf/how_to_check_a_dryer_switch.pdf
    • https://uploads.strikinglycdn.com/files/78f4a4eb-9334-4ca9-9e0c-4b9896ab48d7/vigibadisab.pdf
    • http://nokejufesuw.atwebpages.com/business_productivity.pdf
    • http://zelawiture.epizy.com/comcast_earnings_report_2018.pdf
    • http://nerusejide.rf.gd/zetisatizas.pdf
    • http://tupomomi.rf.gd/adidas_jersey_sizing_guide.pdf
    • https://uploads.strikinglycdn.com/files/a49ce19f-f4f0-4eaf-a1d3-73a84937cb75/how_to_use_the_writing_tool_on_cricut.pdf
    • http://zepuwiz.atwebpages.com/grade_10_analytical_geometry_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/71e37d5d-b975-4392-bec5-2c5c187785d0/jamie_eason_live_fit_day_1.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_off0000e737.bin
505ca64f45dcd9cd50f9b344ef3a4f08ca8f53deb061ca57028d549b088bee33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE737 4676 bytes
font_01_sfnt_off0000f72c.bin
79b0fe963b8779c2e2fd20017afdca6ffb3d52f6f8d6d6516eba9f04da645fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF72C 9784 bytes

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