Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5d1e730edb39b2…

MALICIOUS

PDF

77.6 KB Created: 2021-01-03 02:37:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 819a899451194f15996378534b21aea9 SHA-1: efac4440aeb872bfca1128624e05a660d288cc34 SHA-256: ae5d1e730edb39b250e6e30cbeb768b378b57f6b349e87162c3ba22964e9c3a2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain that appears to be involved in distributing potentially unwanted or malicious software, disguised as a "birthday song with name maker apk". While no scripts were explicitly extracted, the PDF structure and embedded URL suggest an attempt to trick the user into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffking.ru/aws?utm_term=birthday+song+with+name+maker+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463809/normal_5fa31a4543a48.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/87fdb.pdfIn PDF document text
    • https://cdn.sqhk.co/ranilabar/bbohc2D/wifi_ac_file_transfer_speed.pdfIn PDF document text
    • https://nirefuriwubava.weebly.com/uploads/1/3/1/6/131637308/kajujosisip-gosomewalunixid-mejolitido.pdfIn PDF document text
    • https://muruvusi.weebly.com/uploads/1/3/4/5/134598427/127794bf306e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/15baaecd-0673-4d20-9f53-e8d8809eb362/85481959722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79505d2e-d5b3-47f5-b929-cf2c29eee3fe/onkyo_tx-nr585_7.2.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/zevexavafewukoferogex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36a7fcf0-95fd-4921-81c1-c6847b376a2b/cc3d_openpilot_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/98456870984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0284eb2-f4e5-446b-8099-fa3c4c3d9494/82765687747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/084f25a3-2c9f-4f47-b672-047bbe562e66/jisebomiwofuvasexugemosob.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC311 5648 bytes
SHA-256: c039abcc4fef82580482f016b06d431dc879f1b1a80750990d4bdf07e78bf78c
font_01_sfnt_off0000d633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD633 8680 bytes
SHA-256: 9f296e5f782662d141a27724d9533a6c3678247c4c7afe73a37964f7a44f5368
font_02_sfnt_off0000ee74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE74 10548 bytes
SHA-256: 0e60c2b4554034635a5ec32851023050acd2f815edbae108d5db8a658726da05
font_03_sfnt_off000112a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A5 16512 bytes
SHA-256: be3a3a32a6ce4838b0255329f2033588e2ec7deba20861e0b945dc2c3ab95cb2

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