Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c09a397258532e3…

MALICIOUS

PDF

70.7 KB Created: 2020-12-27 08:34:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c126e5a1e8e692a81fa0973396cbe198 SHA-1: d5b6f3a314cd339d34fe9895dd35701d244f55da SHA-256: 9c09a397258532e3c98a8fdd77befcf3a5434a28b9f28979c05b949151171c03
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL, 'https://traffnew.ru/aws?utm_term=earth+day+activities+worksheets', is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text related to 'earth day activities worksheets', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/aws?utm_term=earth+day+activities+worksheets PDF link annotation
    • https://cdn.sqhk.co/joduragenep/Ffbfgdm/9869187102.pdfIn PDF document text
    • https://cdn.sqhk.co/junuxuseg/ccEhhia/82342918543.pdfIn PDF document text
    • https://cdn.sqhk.co/milibotobov/cxDhjhe/21431938957.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca93bf93-c12a-4c15-a76c-73b336b365e5/23071221238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a253be5-7547-4ef9-aced-134a8056d066/pewusosedagorirunutebule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8e8c7d2-bccb-4e0b-aa1d-bedecb027d42/hiraoka_yuta_blog_sites.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be2e5c6-53ac-4d79-91d3-32608746f7cb/71072833833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/892cb202-ef61-4166-bb3f-35aee59f8a94/reading_for_advanced_composition_free_editor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b69f8da2-8662-4218-b09b-e637386fc8b5/rugovapebijovesidixak.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/bible_journaling_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/chromium_os_for_raspberry_pi_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7816df61-eb15-41cf-8c40-c16e9d451f24/67605558571.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_off0000d92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD92E 5272 bytes
SHA-256: 8fd4274e546c7c951c33ae6908c1af739c6c5beb7ee9ee5120305fd1cf295de9
font_01_sfnt_off0000eb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2E 10272 bytes
SHA-256: 3446e0769b94bc721f38dd640e13df24c66d29d995138fda61a9207ef5f14bf0