Malicious PDF — malware analysis report

Static analysis result for SHA-256 b98c901601798098…

MALICIOUS

PDF

75.5 KB Created: 2021-04-03 16:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fe39d3e0e3cdbf345949f8fdb1439554 SHA-1: b0a62c12fca678c4e0d6eaf2389eeb6d7600829a SHA-256: b98c901601798098f68c1b02373fb5b399f03ed6935a97619649869d825dce6c
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 0.9997

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://gimoguvi.ru/123?utm_term=chess+for+android+4.+0.+4 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380088/normal_5fd88e5a5c9fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412767/normal_5fee54e29f89a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461249/normal_604dddbb779ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485152/normal_5ff51ad23fbdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_601734a08879a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375704/normal_60260d4e3a01a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_604f25597f356.pdfIn PDF document text
    • https://cdn.sqhk.co/ninuxoti/8bjeNig/speedy_cash_near_me_san_antonio_tx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479679/normal_601eff486a608.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/hjOgiie/let_end_this_meme_squidward.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421641/normal_5ff091f04df54.pdfIn PDF document text
    • https://cdn.sqhk.co/sarowojep/gBigsfE/kazavopabetuvire.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416144/normal_5ff01561a20ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422659/normal_5fff322113e2b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/what_is_made_of_membranes_that_contain_chlorophyll.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/microsoft_edge_stop_code_critical_process_died_error_report.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/i_cross_my_heart_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7899f2ba-e0b6-43d7-9e58-0c2dc1dc59cf/gorisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75057938-7a87-4678-9a5b-f99ca0f8b2f4/95731061722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac784c09-33ef-4f9b-a420-78114533412e/samsung_rfg297hdrs_freezer_not_working.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA88 5132 bytes
SHA-256: cd8ff40dce7772f450f4c6cf1250756a0dbf2a61a9197492fe9ee38c2c669cc7
font_01_sfnt_off0000fbf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF8 10960 bytes
SHA-256: 4389066ea2685adce21db5f823799c7403c31fb93bc34f87ef0b76e3bf9ec8a1

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