Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bdefe7e1f6ee63…

MALICIOUS

PDF

68.3 KB Created: 2020-11-24 16:46:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bafcfe69f33552c5ad90e46c9c4e2a7a SHA-1: b18106e56960d7f160d14318ae6054e4567c2152 SHA-256: 56bdefe7e1f6ee6339d8efac33c79ac448505fe03cc374234c6097ef0a413438
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafftec.ru', which is presented as a download for 'Gta 5 full apk obb download'. This suggests a phishing or social engineering attack aimed at tricking users into downloading malware. No scripts were extracted, but the presence of the malicious URL and the document's classification strongly support this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/strik?utm_term=gta+5+full+apk+obb+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386081/normal_5f911223c1f36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5f92522512d8c.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/be744b36-4131-4323-9b35-045c57e67c34/87320583877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f242c91-0f44-4459-a3ce-5bcef3d86975/xomurozapakigu.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/battle_royale_squad_survival_mobile_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a98b7663-e5ed-459c-b9ee-027424abd117/porovnajte_starovek_Grcko_a_starov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdb2b340-b9ee-4f57-8162-8380b89e8b9b/19125715657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7451859c-c51b-4924-b4c0-5c7c3c500b15/levolijiluwusokevevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe22685b-e873-49f6-9eb2-65a7c7abc2b7/59559081202.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/words_that_begins_with_sl.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/android_chrome_bluetooth_keyboard_shortcuts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109bf78d-5baf-4b20-9863-a5c9bdffc4eb/rhode_island_colony_relationship_with_natives.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7898a030-6989-4f82-aa55-124224a5f579/48533864689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29ef8e38-8476-42c5-987f-008783010469/smith_micro_poser_pro_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccb9322b-02b5-4af8-84df-e3d28caf5829/73382038882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02b00918-08a6-49cd-b2c3-490cc630ae52/day_of_the_tentacle_guide.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_off0000cd43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD43 5212 bytes
SHA-256: 3552f758007323e2029f736d9537ea059643f3c6bf038262ea9859b64cfe754c
font_01_sfnt_off0000df2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2D 10972 bytes
SHA-256: 1cab4dd2e5bb02506c70c0c1b284cfe2578b065247c7555b2f6d90e8b21216f4

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