Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9dd72cacaf9a787…

MALICIOUS

PDF

72.6 KB Created: 2021-01-21 22:02:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e44230a5bc8b7d155179453e422eb40d SHA-1: ff3ff9109fc592f64e476802a5770c94148a28d2 SHA-256: f9dd72cacaf9a787c07e7a75a26931623e221f1c3e0e6c29228d36edcb57481d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. The embedded URL points to a domain that appears to be part of a lure for downloading an application, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/123?utm_term=download+titanium+tv+apk PDF link annotation
    • https://site-1174676.mozfiles.com/files/1174676/annamalaiyar_audio_songs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505699/normal_5fe3eb95dfbce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365547/normal_5ff62f0c9c9ca.pdfIn PDF document text
    • https://site-1177484.mozfiles.com/files/1177484/30840262798.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375907/normal_5fe47e3fb4d08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475737/normal_5ffa25324cfc0.pdfIn PDF document text
    • https://site-1242546.mozfiles.com/files/1242546/44796945921.pdfIn PDF document text
    • https://site-1168289.mozfiles.com/files/1168289/greening_the_blue_report.pdfIn PDF document text
    • https://site-1178097.mozfiles.com/files/1178097/i_wish_you_were_here_chords_solo.pdfIn PDF document text
    • https://site-1174503.mozfiles.com/files/1174503/47947304420.pdfIn PDF document text
    • https://site-1248223.mozfiles.com/files/1248223/moxinedug.pdfIn PDF document text
    • https://site-1166703.mozfiles.com/files/1166703/wind_up_bird_chronicle_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/vifusupegiza/56574473619.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/vandyke_software_securecrt_free.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/animated_love_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/2019_tamil_new_movies_in_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/adobe_reader_11_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/20638108660.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/arch_enemy_nemesis_video.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_off0000dfc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC0 5048 bytes
SHA-256: ba2719ec6ef2b74176f97527f4d9401395471069174465f0ea2e79b690d87a59
font_01_sfnt_off0000f0fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FE 10568 bytes
SHA-256: 1a27a6f49b424ec7687a2c83ae4ff37dd3cb48c6dfe73e2f39f66e3738348170

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