Malicious PDF — malware analysis report

Static analysis result for SHA-256 4837ed741a619a81…

MALICIOUS

PDF

160.4 KB Created: 2020-12-15 22:13:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c4d32ae03c669611b4b6e79adb5f1704 SHA-1: a0e1d7c40e6fe63d5ebe10c54bdc98146248941e SHA-256: 4837ed741a619a819283805453f6107c77e6bc5c2292f5c114784461b7b81c6a
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 points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/123?utm_term=flo+rida+sugar+mp4 PDF link annotation
    • https://feriwixuwegixuf.weebly.com/uploads/1/3/4/6/134602873/4142685.pdfIn PDF document text
    • https://nurosamemozixa.weebly.com/uploads/1/3/4/3/134375837/5609935.pdfIn PDF document text
    • https://ralirepiputup.weebly.com/uploads/1/3/4/8/134852471/fikonotejabapefuwes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/tent_groundsheet_anaconda.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e107791da6493f66ed7c/t/5fc833558eecd53e39e19536/1606955862673/8_ball_pool_app_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/20105873174.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/kozavoziletotopenivinux.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/old_age_sticks_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/bodepova/62637836697.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/aradhana_movie_hd_video_songs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4e4ff3de5e49b55ab4d0/1606372944758/jomoxorurigip.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/98916754185.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/blue_water_grill_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/40258663349.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/magazine_design_templates_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/13767679495.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002233f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2233F 4900 bytes
SHA-256: 12f3796dac1cc0c19f2c4502dc03e60b09c6e525a067f6333186021dadcaf208
font_01_sfnt_off000233e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x233E3 16608 bytes
SHA-256: 3d064573ce90999d1cc956ba1b42c3e6cf057ac0e1c6a6f2cb08db6f044a11d6
font_02_sfnt_off00026483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26483 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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