Malicious PDF — malware analysis report

Static analysis result for SHA-256 36c1f611b6641085…

MALICIOUS

PDF

83.3 KB Created: 2021-04-02 01:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d1f5b2f198759236b5900645a8757d7f SHA-1: 76ff48ceaa65272811ffc7f3d83c387594a4222c SHA-256: 36c1f611b6641085f7ba95dcac5bcbd94e1b2d7700ee26d4f17865783cdd7f4b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a pilot operating handbook, likely as a lure. ClamAV detected this file as Pdf.Phishing.Trojan, and a machine learning classifier also flagged it as malicious. The presence of an external URI and the overall detection indicate a phishing attempt designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/award?keyword=cessna+172p+pilot+operating+handbook+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452862/normal_5ff2850b2b9be.pdfIn PDF document text
    • http://javefuxola.getenjoyment.net/que_son_las_auxinas.pdfIn PDF document text
    • http://kofupum.mygamesonline.org/l_anatomie_de_l_oreille.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/51889494149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383586/normal_606646652c455.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mazolofoju.epizy.com/meningitis_bacteriana_y_viral_en_pediatria.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/14446713735.pdfIn PDF document text
    • http://limirosu.rf.gd/bigiwetotokisimunemox.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/jsc_marksheet_2018_all_education_board.pdfIn PDF document text
    • http://ketabigumowun.atwebpages.com/69918691577.pdfIn PDF document text
    • http://sogisujomixugo.epizy.com/vurijekoruforixodiba.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/66298226581.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/challenge_war_of_the_worlds_2_episode_11_recap.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/internal_carotid_artery_dissection_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/misikesig.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/2311614718.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/romeo_juliet_rekkai_virika_song_lyrics_in_tamil.pdfIn PDF document text
    • http://fokogemuzaraw.epizy.com/12141520073.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_off000105a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A9 5676 bytes
SHA-256: 187bb05dec03945533a7f3b3408a4b62c3838cdec5f759bd42b547c144e9a4eb
font_01_sfnt_off000118f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118F5 11508 bytes
SHA-256: dfdd27afa78a47b7eb06b16d04699da4f91d36056f81489b9c0ccb849e8c6be0

Open this report in the interactive analyzer, or submit your own file for analysis.