Malicious PDF — malware analysis report

Static analysis result for SHA-256 9412c2b4f1699e08…

MALICIOUS

PDF

70.6 KB Created: 2021-02-24 02:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 07d49df4a461e1373e3b45fea912ea14 SHA-1: 53e4479d9b4de302cf7369cd67712f3f4430d1d1 SHA-256: 9412c2b4f1699e08871e9803fcdd3171a6eb2bb61987aeeaea152ed6324b687e
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'selling' and 'pink', potentially to entice users to click the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=to+sell+is+human+pink+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4422638/normal_5fcc4d4d8e704.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/Qfygfhe/viral_love_funny_videos_2019_pinoy_facebook.pdfIn PDF document text
    • http://cashfree.store/764490081272w4dr.pdfIn PDF document text
    • https://cdn.sqhk.co/lilokimoz/hjggWCB/59022678806.pdfIn PDF document text
    • http://fastpysystem.online/frases_de_amor_y_respeto_a_la_familia5b6tm.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxuduxexi/NNjdmxk/72623766110.pdfIn PDF document text
    • http://rmk4sale.xyz/autumn_leaves_sheet_music_guitarxg8xv.pdfIn PDF document text
    • https://cdn.sqhk.co/salifera/jhqXiin/pikudifonitakif.pdfIn PDF document text
    • http://ductsunlimitedins.com/aptitude_shortcuts_and_mind_tricks8usdo.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/jarawaxanivu/64367993664.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/72915875077.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/algebra_equations_worksheets_year_9.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/papercraft_box_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/pehle_kabhi_song_baghban_mp4.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_off0000d975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD975 5196 bytes
SHA-256: ca8f1f2581dd97ec1517a1ea0a2cb3a631dfc11462c9a13ac832ddee4b8f6982
font_01_sfnt_off0000eafa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFA 10236 bytes
SHA-256: 5f21fb933053f45e16cb6335ffbb02baac45bafedfa4cc1458c686483aa21eee

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