Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e11ed26478cac8…

MALICIOUS

PDF

69.3 KB Created: 2021-02-03 15:17:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 1ce877c566c9ff30af61849215cb6905 SHA-1: e8f2f0f0f57a105f754db14225f5e80d3f55de9f SHA-256: c7e11ed26478cac81bd5a0fa000da8f87078cb6b6471dea26c916af07345e9ee
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, masquerading as a music download. ClamAV and ML classifiers strongly indicate maliciousness, classifying it as a phishing trojan. The presence of embedded URLs suggests an attempt 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://jacksth.ru/123?utm_term=katy+perry+teenage+dream+the+complete+confection+itunes PDF link annotation
    • http://nature-ital.space/16414551747p1q7m.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/0zjbDb5/tiktok_songs_lyrics_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/dukapudubi/misWwgd/co_parenting_tips_for_mom.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/ATii4oX/5635305865.pdfIn PDF document text
    • http://micrometerdigital.xyz/filmywap_2018_hollywood_bollywood_movies9kmx1.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/ixji1G8/best_pc_games_for_2_players_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/jhVjeWi/39403398813.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/hfjcn9G/zombie_derby_pixel_survival_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lofakekaf/jfhgOha/twitter_hashtag_promotion.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/c6jijdj/mk11_mk9_skins.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378621/normal_5fde6523a47a4.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/eahfgc9/nilibamubipa.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/nimuwet/atom_editor_latest.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/16183076221.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/15370602449.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/kilulutaxezafesoxu.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_off0000d085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD085 5640 bytes
SHA-256: fb53c8a9cd67689635fcdc91937afcbee62f4966da998405da1e62ac3d27b046
font_01_sfnt_off0000e39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39D 10656 bytes
SHA-256: fdceab208d84a3d5af80cccaaf5187ec265ae5f6f37d6ad84da65e361927df9f