Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f4b6fa7a80338f…

MALICIOUS

PDF

76.6 KB Created: 2021-02-26 17:44:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: a0e35f33978725da36b18ff095750670 SHA-1: 121f4ceec22e7831eae7dcc3fd151abb7d0618d5 SHA-256: 19f4b6fa7a80338f83bf4979792d16f5d6321d73991c14b43bb9b5305c9f1db0
104 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. The document body, though heavily obfuscated, contains text related to a TV show, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/award?keyword=why+did+defending+jacob+change+ending PDF link annotation
    • http://muzibatixabu.mypressonline.com/kukolejasixase.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/GiehcTN/54588143844.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/ergo_omni_360_cool_air_mesh_newborn.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/jLhahcw/race_king_trailers.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/princeton_offense_playbook.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/geronimo_stilton_book_1_read_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://dabizoxirodili.rf.gd/who_is_the_highest_net_worth_celebrity.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/62669357709.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/25233480226.pdfIn PDF document text
    • http://sarozaxag.epizy.com/xowizami.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/duratex_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/implosion_mod_apk_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/healthy_family_relationships_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/12030441600.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D1 5016 bytes
SHA-256: e031c65dc74d1e7d967384b61c5fded5c82a154f5a0a2fe49fb5e2a429982445
font_01_sfnt_off0000f2e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E8 10732 bytes
SHA-256: 9b884a27cf41f4e038959e427631321cd62d4b82c002b2e3f7e982a81889cdd1
font_02_sfnt_off0001176b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1176B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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