Malicious PDF — malware analysis report

Static analysis result for SHA-256 50102175ff18e174…

MALICIOUS

PDF

66.8 KB Created: 2021-04-03 19:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 596814df06a7e97946f11eb4fd35c6ca SHA-1: ba6eafecb7192c9f9d94bdcdc8fb3d50a91c9e2b SHA-256: 50102175ff18e174183ff6bb5c49f84ef899d1a0787e20503d88b6d7b32b8456
94 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain. Heuristic analysis and a machine learning classifier flagged the PDF as malicious, with ClamAV specifically identifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a book title, likely to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8526

Heuristics 3

  • 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
  • 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://dugedepap.ru/award?keyword=boston+marriage+david+mamet+pdf
    • http://ig-copyrighthelpcenter.com/formato_bienes_y_rentas_2020u15ps.pdf
    • http://wwwbcpzonasegura-viabcp.com/dir_615_password_defaultvh0j6.pdf
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fe3bf8687618.pdf
    • http://deromgroup.com/old_navy_shipping_delays_december_2020l3doa.pdf
    • https://dozexida.weebly.com/uploads/1/3/4/5/134590021/xosemus.pdf
    • https://cdn-cms.f-static.net/uploads/4374379/normal_60119fdc14f47.pdf
    • https://poximixej.weebly.com/uploads/1/3/0/7/130776069/0b0316fa.pdf
    • https://gejekawuxo.weebly.com/uploads/1/3/4/4/134497426/lizawene_refidexaram_mibigupovi.pdf
    • http://prazdnikprosto.ru/75039081951kg4tx.pdf
    • https://damuduwanilew.weebly.com/uploads/1/3/4/4/134477354/844ae5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a3e8d6b6-68ee-4625-a313-a25a09dbd39d.filesusr.com/ugd/312e12_b0e7e40fe66d49ef841145c98cc84f5a.pdf?index=true
    • https://s3.amazonaws.com/tipikaxe/73764911963.pdf
    • https://s3.amazonaws.com/juduk/offline_bingo_games_for_android.pdf
    • https://d2d110b1-dce0-4b0c-bed7-be24280b7a6e.filesusr.com/ugd/165585_e768ce9876314e2f96a07f6bf995d5ee.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cd685b43-25fa-4879-b989-ecfa0dc1fcbb/twilight_book_1.pdf
    • https://uploads.strikinglycdn.com/files/5347dfb5-6d81-41ca-911e-5da91f9c08c3/kemonifimirekowezev.pdf
    • https://s3.amazonaws.com/sajatofubote/simple_cardboard_house_template.pdf
    • https://s3.amazonaws.com/muwemivumazulax/73572297057.pdf
    • https://bc13a564-db4d-4abe-bba9-081b1c4085ef.filesusr.com/ugd/d5ec75_92edf5d2a52344be90061f992f1ab217.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb39.bin
a17ef28cbdf9e2df3435b5725ab0ae98172bae7d487305461c5c289793963320		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB39 5436 bytes

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