Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde01ea5ae234305…

MALICIOUS

PDF

75.9 KB Created: 2021-04-29 14:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80225d6fc223c7afd4aceed1da732876 SHA-1: 224e267b8bbaeb30826801c899616a73c0138205 SHA-256: fde01ea5ae234305ec0bf5f188360c3ea3cc2bc16e1a6b92d25949f1a8d16b85
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure, likely attempting to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=1st+grade+first+grade+science+worksheets
    • http://gerododuxokamid.iblogger.org/7722364289.pdf
    • http://nomuvafemokin.iblogger.org/21796904144.pdf
    • http://jagefefixod.22web.org/exercicios_de_atomistica.pdf
    • https://cdn.sqhk.co/kixarozikej/oCjixij/45418280339.pdf
    • http://metalllift.ru/do_you_put_cooking_oil_in_an_air_fryerqse10.pdf
    • http://senogibe.iblogger.org/cooler_master_haf_912_advanced.pdf
    • https://cdn.sqhk.co/dukoredod/icKFChf/tomb_of_the_mask_color_level_49.pdf
    • http://uscreditmonitoring.info/pdf_ecology_and_environment3wqag.pdf
    • https://cdn.sqhk.co/mudonisogub/RhjeibT/download_game_knife_hit_hack.pdf
    • https://cdn.sqhk.co/wofunukasu/cbcjaZc/13784504021.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://soligafuve.epizy.com/66301424295.pdf
    • https://uploads.strikinglycdn.com/files/24fa9f8b-98bf-426b-a2a4-86a4b34a342d/plc_tutorial_for_beginners.pdf
    • https://s3.amazonaws.com/tozaduliwubega/32009510969.pdf
    • http://luzeparuzibez.rf.gd/food_web_worksheet_8th_grade.pdf
    • https://uploads.strikinglycdn.com/files/aae5d6dd-e7b0-4d3b-911c-19061082fdca/65936420627.pdf
    • https://uploads.strikinglycdn.com/files/6fb5c30e-5031-47e1-b346-893cf2604184/25134120420.pdf
    • https://uploads.strikinglycdn.com/files/502b79bc-a1f0-4e72-b86e-ba6074207e32/12654967469.pdf
    • https://s3.amazonaws.com/dalava/kaduxutojawebevofip.pdf
    • https://s3.amazonaws.com/gumagabu/ponowisinar.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_off0000ea56.bin
fb763642a488241c662a90305bea9acd86720ed89b39602a02cb817a51ef9508
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA56 5364 bytes
font_01_sfnt_off0000fca8.bin
906d0e70c4f0e10c8701a938bfc60a726e3d186bc6aa1916fcc8daa5474eef98
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA8 11012 bytes