Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd745b65ddb81912…

MALICIOUS

PDF

187.7 KB Created: 2021-03-20 21:54:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4f947482f3a5c36ce64f932ecad6ff8 SHA-1: 300067a145c43a82c98dcd02df6c0a05db28df38 SHA-256: fd745b65ddb8191276d17af762cfec72067d78f5b54345a1cb1acc92f96a4794
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to contain metadata related to PDF generation, suggesting it was programmatically created to host the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://resalured.ru/strik?utm_term=how+many+pages+long+is+hamlet
    • https://fekoguto.weebly.com/uploads/1/3/4/4/134491689/11e0706706b234.pdf
    • http://banki-internetowe.com/47130821370rf8fy.pdf
    • http://mmuuue.space/76483077796hg67y.pdf
    • https://cdn.sqhk.co/tizalenifo/kiehfFH/55553747743.pdf
    • https://cdn.sqhk.co/jemajujo/bgg7Hgi/top_100_bollywood_songs_download_free_mp3.pdf
    • http://honbiz.pro/sekanidopeto2rxqn.pdf
    • http://g2am2e.xyz/some_words_to_describe_sunrise48z63.pdf
    • https://sutivekawexebe.weebly.com/uploads/1/3/1/6/131636655/8854566.pdf
    • http://9gusevshop.space/86538717306zyry2.pdf
    • https://vivexizakodol.weebly.com/uploads/1/3/1/4/131483194/pisir_lamede.pdf
    • https://fikobovivinuzo.weebly.com/uploads/1/3/0/7/130739062/55e95ee.pdf
    • https://budovatepita.weebly.com/uploads/1/3/1/3/131398204/kudafanova.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jemisajoda/guidance_note_on_tax_audit_report.pdf
    • https://s3.amazonaws.com/pasutiz/walmart_pharmacy_hours_lubbock_tx.pdf
    • https://s3.amazonaws.com/dezajok/43136015190.pdf
    • https://s3.amazonaws.com/wixatax/2120912589.pdf
    • https://s3.amazonaws.com/takateg/90016281978.pdf
    • https://s3.amazonaws.com/tokatefozude/android_one_phones_under_15000.pdf
    • https://s3.amazonaws.com/woxotopapozokev/anarkali_songs_video.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/asus_z97-a_m.2_compatibility.pdf
    • https://s3.amazonaws.com/salosibejodod/59357615515.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000283aa.bin
de0f406f9d3b155bafc4085ef5765157027961f1d5d503dc8d96d65f49514ebf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283AA 5292 bytes
font_01_sfnt_off00029596.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29596 1800 bytes
font_02_sfnt_off00029e23.bin
1c595a808d5f29561271b907630ebd6add56fcff0adb85f08d7d412534b17ae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29E23 13024 bytes
font_03_sfnt_off0002c90a.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C90A 16312 bytes

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