Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1d0cf9d9f57cc71…

MALICIOUS

PDF

77.7 KB Created: 2020-12-25 06:08:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 838679a6f33e82b4150d764261c1874e SHA-1: ed0659ac157b878cff7faa7bc6983d9db8f0d949 SHA-256: e1d0cf9d9f57cc71395c9b9dfb4a4428e2a1efaad94c872316522ff17ceedc01
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffnew.ru', which is likely a distribution point for malware or a phishing page. The document body, though heavily obfuscated, contains text related to downloading content, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/strik?utm_term=she+wants+me+dead+mp3+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495684/normal_5fcd565a387a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377101/normal_5f89cef432793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f997920ee231.pdfIn PDF document text
    • https://cdn.sqhk.co/zurosewe/hdjfRc7/93793337586.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/b85c4db0-27c6-4ed3-aed8-8a297cb1df2e/range_control_fort_drum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/064f851d-2124-443c-acc3-4a923230e578/mantras_para_la_salud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07bb6f0b-e980-4219-bd71-97e7f973888e/brother_4750e_fax_machine_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c8385df-db9d-4906-ae06-fa64bc82f56a/pirates_of_silicon_valley_download_720p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/556fc1cd-4bc2-4bce-9679-065f5d53c069/proper_golf_stance_and_grip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43d3aedd-b4ce-4c11-9cbd-d6b227dec229/silent_hill_xbox_one.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e127d2c-fa52-413d-b750-bfd6e2e7573f/mount_vernon_elementary_tech_lab_resources.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC251 4088 bytes
SHA-256: 7b9113153abf76c70b6b2adbc2bffd45522b4e5f739357c1a92277e85c397d3d
font_01_sfnt_off0000d0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D6 5640 bytes
SHA-256: 9cc43f124aae7e058acc79d296002c39924a868295db03d2e23ca42f6d67f0c8
font_02_sfnt_off0000e3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EF 15232 bytes
SHA-256: e58eaa1869c1a96691b8a1078a30e8d19759c4c5066e2f151fa3469b259cbe76
font_03_sfnt_off00010d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D50 17588 bytes
SHA-256: 47b61b236aa1da3a1ea33f4cfa8b735f9a49e7c73f2b52a142a54368bd35fb75

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