Malicious PDF — malware analysis report

Static analysis result for SHA-256 67568301fe7dfe06…

MALICIOUS

PDF

82.2 KB Created: 2021-01-18 09:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 05cfd4208341f87c14617a7ea5e91da9 SHA-1: 9a60e3dc12f950cb5a09ef825f38ba0909885409 SHA-256: 67568301fe7dfe06b6d5ce178c02229a5e7fddf3872425413c6e4ebbcb5c75d9
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://traffnew.ru/wb?keyword=biggest%20tank%20battles%20of%20world%20war%202, suggests a phishing or redirection attempt, likely to deliver a secondary payload or lead the user to a malicious site. The document body, though heavily obfuscated, contains text related to tank battles, which is likely a lure.

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://traffnew.ru/wb?keyword=biggest%20tank%20battles%20of%20world%20war%202 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384836/normal_5f9e2e14d8d41.pdfIn PDF document text
    • https://site-1168018.mozfiles.com/files/1168018/79889886637.pdfIn PDF document text
    • https://site-1168447.mozfiles.com/files/1168447/bomuwukusola.pdfIn PDF document text
    • https://site-1175878.mozfiles.com/files/1175878/67893703616.pdfIn PDF document text
    • https://site-1177340.mozfiles.com/files/1177340/madness_combat_sound_effects_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/chronicles_of_crime_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/download_badoo_apk_free.pdfIn PDF document text
    • http://sixijoras.epizy.com/14870595479.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/worksheets_on_collective_nouns_for_grade_5.pdfIn PDF document text
    • http://mujunuge.rf.gd/chicago_manual_of_style_newspaper_article.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/78251799472.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/asphalt_8_android_game_highly_compressed.pdfIn PDF document text
    • http://peburameg.epizy.com/calf_tear_rehab_protocol.pdfIn PDF document text
    • http://pibimosozo.rf.gd/tactic_for_listening_basic.pdfIn PDF document text
    • http://wuduzukatej.epizy.com/60553063218.pdfIn PDF document text
    • http://biwodonugawodil.rf.gd/android_objectanimator_scalex.pdfIn PDF document text
    • http://pagosunizuboroz.epizy.com/chess_tactics_books.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001025a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025A 5552 bytes
SHA-256: c659144d69c476bf8a09869f0e528085df0f2af44b3b29f849afea91777ffd11
font_01_sfnt_off00011569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11569 11260 bytes
SHA-256: 849d30ca9f7476f9cd4405a5d9ff05f68dec7bbce737867485e42b1ac27648c0

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