Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d8bb0be5125706c…

MALICIOUS

PDF

75.4 KB Created: 2021-03-15 22:55:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2de923531be0c5c66bb708e6d066aca5 SHA-1: aa965790eb52b40ad8139effcdcc204c306c0219 SHA-256: 4d8bb0be5125706ccfa6f324087887e64b64265c1b91ed1cf233e1d740f640a0
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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/wix?keyword=april+2020+animal+jam+codes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470692/normal_5fe13bcb3502d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490754/normal_5fce93d05fe0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471719/normal_5ff5dc23a8ceb.pdfIn PDF document text
    • http://wotedogupowu.sportsontheweb.net/pearson_etext_algebra__trigonometry_10th_edition_by_sullivan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muxegeza/27755261389.pdfIn PDF document text
    • http://pudolajuji.atwebpages.com/how_to_open_the_graco_stroller.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/55017291530.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/chupke_se_aahista_full_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/formel_aufstellen_chemie_bungen.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/tulalupetugeta.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/pubg_wallpaper_hd_4k.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/11480206788.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/why_am_i_always_drawn_to_the_moon.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/24832150046.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/66328722496.pdfIn PDF document text
    • http://fararisujis.myartsonline.com/biodata_sample.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_off0000e8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A6 5556 bytes
SHA-256: 9dcf8210802d6acec752cf150beb857317e7edd98cfb55cd5c15729098496259
font_01_sfnt_off0000fb77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB77 11072 bytes
SHA-256: c56869ec58ee48b4144dfbb6a58d0d9a523aaca2455da952c3630bd91089357f