Malicious PDF — malware analysis report

Static analysis result for SHA-256 8487c65c12bf918a…

MALICIOUS

PDF

70.0 KB Created: 2020-12-20 13:19:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5497b81bf15fda17abd2fd629002164d SHA-1: b620d0b0e6c4801858c6115fa27dc0621ccfa646 SHA-256: 8487c65c12bf918af26a12bf0f3b0477c03487dab1e039a0aa4550287538f6dc
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to a 'Sony bravia tv' which could be a lure. No scripts were extracted, but the presence of an external URI and the overall malicious verdict suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/strik?utm_term=sony+bravia+tv+40+inch+price+in+bd PDF link annotation
    • https://jadixuzipekufa.weebly.com/uploads/1/3/4/5/134594590/9982a6b0d640.pdfIn PDF document text
    • https://jiwugulepegewi.weebly.com/uploads/1/3/4/7/134717460/wifuxedom.pdfIn PDF document text
    • https://zisibunekotif.weebly.com/uploads/1/3/4/9/134902626/luvikubilipogaj_lereluxedubitog_wezut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd116d1d5d775a7851cd4e/1606226289104/huesos_del_pie_derecho.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc586ba2bbd74065825e57e/t/5fc918af92aa0d34e9bfcc4e/1607014576483/mind_games_john_lennon_lyrics_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/business_risk_assessment_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea2c5e2-b6ad-4a69-b115-719d09adad41/62321977209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcd62246-996b-4770-bb00-efb14d77f505/dusefomegamop.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/sap_fico_documentation_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67fcb170-47bf-4704-8443-b4b2e1d8e866/46018746868.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/gta_cheats_vice_city_android.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC40F 5584 bytes
SHA-256: 3e1a05ac5cf3cfcf2208b19619b29f638ba3414574cf697ee644589d3fc2b40b
font_01_sfnt_off0000d715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD715 3852 bytes
SHA-256: fb9a9d6d956734aafa617145bc4294d680f35380ebfe4cccb0c41768ced05ec5
font_02_sfnt_off0000e315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE315 11180 bytes
SHA-256: f398acb0949a4b49498d8fc6881f47013508a6e79a39cc25635da964fbaff7b3

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