Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee46456d54e33962…

MALICIOUS

PDF

103.1 KB Created: 2021-01-29 10:23:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9f5cb0841c27a058911cca5c361a13bf SHA-1: d721564fffcf5270c2277a809ae692726a940089 SHA-256: ee46456d54e33962c455c59d0dbb0c34781619b742963d9555c5ffc26549b7ff
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure for a free PDF download, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=the+disappearance+of+the+universe+pdf+free PDF link annotation
    • https://cdn.sqhk.co/dokederajo/jGhgSjb/76152668228.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/aQegfic/pevolorevokepakepuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/dofewijoras/jc1gemS/create_a_json_list_in_javascript.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/mjhojg2/temple_run_game_show_me.pdfIn PDF document text
    • https://cdn.sqhk.co/noxivudeva/hejeb0Z/game_rooms_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/iagjgjd/love_tester_game_online_free.pdfIn PDF document text
    • http://pogadai.xyz/59208109275rskbd.pdfIn PDF document text
    • http://1freedom.space/340520088093vhli.pdfIn PDF document text
    • http://momsmall.space/carvel_ice_cream_cake_shoprite4cp9z.pdfIn PDF document text
    • http://shoop-fm.ru/4748078672o3vlj.pdfIn PDF document text
    • http://herss.space/zavatadunixif1ogt1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sivuvupaxiju.rf.gd/android_kotlin_custom_arrayadapter.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_off00015940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15940 5220 bytes
SHA-256: 3450d6f5bbe89b5a285026efa03922fdc4dd830054282498ad2ced81586a065a
font_01_sfnt_off00016b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B09 10660 bytes
SHA-256: 97d48605c3a6f8a7575e6f4f0268a65f2d5019c6599d8a398631f2b5f25abf49