Malicious PDF — malware analysis report

Static analysis result for SHA-256 825e79fbfc82e9ea…

MALICIOUS

PDF

76.1 KB Created: 2021-03-31 03:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f6fe7089610fa78a2aa3f612525165f SHA-1: 19c66532ab9099f9a61fb5a925c9d57aace50dea SHA-256: 825e79fbfc82e9ea5b33414b8e9bf1a1fbf46b52cb2123725f6545feb8997a17
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://resalured.ru/strik?utm_term=how+to+build+arm+muscle+at+home+without+equipment
    • https://static.s123-cdn-static.com/uploads/4383795/normal_600071bd7c7d1.pdf
    • http://nelitip.22web.org/62006751497.pdf
    • http://gomigapujasep.sportsontheweb.net/kebuzalaluleki.pdf
    • http://setokanekema.mygamesonline.org/best_picture_settings_for_samsung_q90t_tv.pdf
    • http://tinesemexogo.mygamesonline.org/why_was_hope_in_pandoras_box.pdf
    • http://rebezun.mygamesonline.org/dadojemuxepesagil.pdf
    • https://cdn-cms.f-static.net/uploads/4401517/normal_5fdac74dd040c.pdf
    • http://sowivonowiso.iblogger.org/video_audio_cutter_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_6c07c5e1e283457caa0ae1d3255e2b7c.pdf?index=true
    • http://rijejonusax.rf.gd/67280188542.pdf
    • https://uploads.strikinglycdn.com/files/d26140d2-6fdc-4ca5-ab44-6450f082fcd1/garrett_ace_350_vs_400i.pdf
    • http://lizaduguxo.epizy.com/free_printable_bill_of_sale_for_car.pdf
    • http://xowilewegiwo.myartsonline.com/34379394758.pdf
    • https://uploads.strikinglycdn.com/files/ea86563d-9ddd-4d99-939d-62ca4cdfad62/tosetesazife.pdf
    • https://18282f24-d4e3-4c19-b4d9-8e3fdaa82145.filesusr.com/ugd/df2b7b_7a0da3fe381d4066b7d09e11f624f2ea.pdf?index=true
    • https://fb413987-6e77-4bf1-aaa6-e97eb550fbee.filesusr.com/ugd/108936_7459e731bc9840ac87cc84ae5345420d.pdf?index=true
    • http://nujivoforegiv.rf.gd/mekakafa.pdf
    • https://uploads.strikinglycdn.com/files/ae059034-a923-4ec0-a433-776d67102c24/pretty_little_liars_cast_season_4_episode_22.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb40.bin
1859b769f5e5a4fb65f29cbcbbaae696f63f49e27540bccac4a4224c6d29f79e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB40 5632 bytes
font_01_sfnt_off0000fe43.bin
c2ef76a1e13dda887b2c2b613448e11dbcbf9845de234b564f3456b5c5ba51a4
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE43 10732 bytes