Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a241a8f683f2246…

MALICIOUS

PDF

75.1 KB Created: 2021-04-18 02:33:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 55828c484e94e76f56bfdffa3b122ce7 SHA-1: 3733ac76ffb59521c77412b3fafc55288bcc3bf4 SHA-256: 2a241a8f683f22462c8f50f2bdecf9fde345cefc53d796b788d0e65eb6e70bac
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://ponafet.ru/strik?utm_term=samsung+bd-jm57c%252Fza+troubleshooting PDF link annotation
    • http://mnclassis.org/evenflo_symphony_deluxe_reviewsxuzbc.pdfIn PDF document text
    • http://cethq.xyz/xitodukujirepizamaxududobn9col.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421342/normal_604f7430224d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_60154706e8d54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445103/normal_5fc571b0d6801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_604e067f3692b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414864/normal_5fd382e61f173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467926/normal_6040403d4cb9a.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/Vwg2hhd/official_nfl_football_jerseys.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467036/normal_60035e676b35f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393508/normal_600e7d2e86ee9.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/iidQggN/love_photos_live_wallpaper_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459319/normal_5fe88105bed5b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f4221259-ca8e-4ed4-8c8b-7ec687d178c7/lt_meaning_g_shock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bdddff4-6490-40b7-ae3c-1e42da27381a/88702299538.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfca109-cb03-46d7-aceb-eaa645130e4a/2377236125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/197c50bb-e6cb-4a41-b078-a4f333882b65/how_to_use_gamesir_t1d_for_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/833db85b-da2b-4099-9fbd-6c5d5907b5b9/how_to_learn_excel.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AF 5876 bytes
SHA-256: 175f8529ea15ca7f16291c0bc1a1d75a2c68dd9066d5d263ee43eadfb0509fc9
font_01_sfnt_off0000ea90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA90 11200 bytes
SHA-256: 5aeda5f160a5b3edd5d3331534fc787f6790b9aae1dc088dc082d4d6e95f06dd
font_02_sfnt_off000110ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EE 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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