Malicious PDF — malware analysis report

Static analysis result for SHA-256 41fe2dc8a5f165b5…

MALICIOUS

PDF

67.5 KB Created: 2020-11-10 04:05:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f93f5823a78a054038d9630303d2ebb0 SHA-1: b2514966cb9cc475c8faab011b4f690d5f0df2d0 SHA-256: 41fe2dc8a5f165b5358f44e66c4fc9d75d8e27e03fd7e4cf11acccd947984c88
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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?keyword=the+eagles+band+today PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b0b73ab-d2da-4ecd-9c2f-db76913a56d4/left_to_tell_discovering_god_amidst_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/chapter_17_wordwise_answers_earth_science.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/16399860426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f3ad927-f095-4fb9-a26e-9939c1fa3ec7/tuska_daemon-killa_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/giforibarowitubizixef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d64063ee-81c2-4db4-b685-fd9063de051b/24856426029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bcaa010-5940-4f68-a51f-f34db13a9223/nomavafo.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/druck_season_3_ep_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4de961dd-d683-4f89-99ae-2c18df63bead/el_shock_sentimental_descargar_grati.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/13930430040.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/ramadan_calendar_2019_india_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e81f4e-16f0-49d1-b781-40a3ad8e8af5/no_mans_sky_s_class_ship.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d85fc0a6-bc66-4c5b-9361-019f8b52c623/texuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f68ca8a-bddc-45f4-9ecd-d41b47936882/wutuwirexune.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/wonefowewevulibun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9212290-7ad8-4334-908c-bcae0ea5f42b/55866588638.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/bofopabezibubuvanamirob.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_off0000ce3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3A 5184 bytes
SHA-256: 8b49b3b3b85ebab5fd40f2702dc3add458b7115f931720a3734335574eb85492
font_01_sfnt_off0000dfdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDC 9796 bytes
SHA-256: 832fd9118550289589d04ab034275dc99e64f3f8bd4241357844510eecac9993

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