Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce30a4023a2bcc66…

MALICIOUS

PDF

69.3 KB Created: 2021-03-18 16:48:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1655c43de8df76b4cf83cdae18470535 SHA-1: 47015b9359c7f8864d7c22c6508ea1dee761860d SHA-256: ce30a4023a2bcc669f89a82ea3407c969f863d57f0254b1ab5241f0b963416c8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The PDF structure itself shows signs of manipulation, with duplicate object bodies, further supporting its malicious nature.

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://resalured.ru/wix?keyword=wolverine+socks+xl
    • https://zewabezasakaru.weebly.com/uploads/1/3/4/5/134593707/ximigisinid_mowaleziv_vunotu_pulal.pdf
    • https://juduloto.weebly.com/uploads/1/3/5/3/135323899/5442fe20ebe9.pdf
    • http://dujojiwasemob.mywebcommunity.org/12_math_rules_that_expire_in_the_middle_grades.pdf
    • https://zupawifotifawe.weebly.com/uploads/1/3/4/4/134480263/fanexezugoxesogo.pdf
    • https://lewuseloti.weebly.com/uploads/1/3/1/4/131437615/xilogoso.pdf
    • https://cdn-cms.f-static.net/uploads/4365607/normal_6014a144641d6.pdf
    • https://static.s123-cdn-static.com/uploads/4376858/normal_5fe16897698bf.pdf
    • http://sakulog.sportsontheweb.net/sketchup_8_download_old_version.pdf
    • http://rubolanir.mypressonline.com/29861218317.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tibanepoxilibud/1015680063.pdf
    • http://wififeju.atwebpages.com/67286893826.pdf
    • http://dapizodipe.myartsonline.com/64797566969.pdf
    • http://sasukagisodubex.onlinewebshop.net/melexarerimefan.pdf
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_a1caf5d05a2a49a4b53259755c69febb.pdf?index=true
    • https://4e16d9da-0927-4957-8a4e-4544605d6055.filesusr.com/ugd/d7e550_1cd94790a8e24207971296284734b3a5.pdf?index=true
    • https://968bac2e-1409-45a7-bd11-2c37eba47390.filesusr.com/ugd/c81504_209de01602664af999cfeb93ab3bc10f.pdf?index=true
    • https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_d66540452ff543909ce831c2b81f4e15.pdf?index=true
    • http://zizenatoxu.myartsonline.com/best_book_for_ssc_cgl_english_vocabulary.pdf
    • https://s3.amazonaws.com/xeropizuwe/51161073851.pdf
    • https://36fc1fe3-b646-4cc1-b6e9-de51469aea27.filesusr.com/ugd/3eb4bd_d6110fc62eef4ad8b6d676cca81a2f66.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d256.bin
2b29f002618f3651fe2bafc397df0ce082cec882d880171e510d1db7519ee353
pdf-font-stream PDF embedded font (sfnt) at offset 0xD256 4788 bytes
font_01_sfnt_off0000e2c8.bin
e681a88603aa57207b794ee71b3e5d5da9cbec82a491fb173ebb54a5001d5543
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C8 11088 bytes