Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32c4d16148d09e3…

MALICIOUS

PDF

77.4 KB Created: 2021-03-10 20:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 612522d3780f2dd699f5ddb0a36e34e0 SHA-1: 009924099f85df43ed062bf2300afe41177dfdf1 SHA-256: b32c4d16148d09e38c654d1945bdfa03268b87b0a82111f5031329a6460224c4
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a product spec sheet, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/123?utm_term=elkay+lzs8wslk+spec+sheet PDF link annotation
    • http://bbcua.site/18011082230qhb3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421782/normal_5fc79e3188123.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484358/normal_5fcf7485d5272.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484355/normal_5ff2d6de510db.pdfIn PDF document text
    • http://eglo.club/sanitas_sft_77_manuale_italianopbsf4.pdfIn PDF document text
    • http://sehq.xyz/what_organizational_structure_does_nike_useidenb.pdfIn PDF document text
    • http://ecosbor.net/friends_like_these_podcastbp6j0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494160/normal_6004a07533da8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413563/normal_5ff6153d63d7d.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
    • https://uploads.strikinglycdn.com/files/f8949108-516b-4d7a-83eb-55c5c1160610/64588091620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3a0ad8f-4dcf-48c5-bdd6-6b7f835eca87/96664747291.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/bottomsheetdialogfragment_rounded_corners.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/29571886196.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/58211712199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9f60682-5f57-4836-9c2e-f767c1f792af/flysky_fs_i6x_firmware_plus_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/cg_pre_mca_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/vikalinegarixaxobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3168adb-0746-4acc-9cfe-b45445ca83fa/sagopavonowovelekisivez.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/34497798130.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/free_live_tv_apps_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/90278578050.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/joluwaterawoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b88515a-9862-49c0-a088-058300e08eb2/9639097271.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/robutobekepawerewor.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_off0000e072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE072 4908 bytes
SHA-256: b8b1f5c856fde55c7f6a9e12632f2205c0a3018f5f4990826c05ca4a33bd4784
font_01_sfnt_off0000f154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF154 12152 bytes
SHA-256: 2f650fd65b1d017431271e652f67776afc2b3ee53839008f26dc473e08fc29fc
font_02_sfnt_off000119f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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