Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95a6852fc2c995c…

MALICIOUS

PDF

80.4 KB Created: 2021-02-18 03:18:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 108f83e7e07519f47c9675ed658c5eb0 SHA-1: c5099946566f87ff55da0c9480971943c980e370 SHA-256: e95a6852fc2c995c70cff5054d207eae6659394f15e94484012214b569012deb
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL that promises a 'Gta 5 3dm crack and update free download'. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for users seeking pirated software.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=gta+5+3dm+crack+and+update+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407733/normal_6016c1a1dc2d9.pdfIn PDF document text
    • https://cdn.sqhk.co/gujadozede/flyihnd/32039821968.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454430/normal_5fe23a7b9f9ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462037/normal_5ffe6c7c6cd16.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/gYhgihL/farm_world_roblox_group.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408355/normal_601d1aeace351.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486745/normal_5feaf0bfa38c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367007/normal_5fedc441dea9f.pdfIn PDF document text
    • http://onlinekartiadesi.com/hiromi_uehara_blackbird_sheet_music8vrqw.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/Hidkhdz/20783482428.pdfIn PDF document text
    • https://cdn.sqhk.co/juvanejejuwo/gegggxa/todevewetirafamesilapun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472503/normal_600ff1f3cabd4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419828/normal_5feb60b2b94ab.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zupenafud/microsoft_word_math_worksheet_generator.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000e4c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE4C0 13744 bytes
SHA-256: 4c03f60897ee9c004cfb21255a2ae01abf7743943e62c2f2459decacc65026c3
font_00_sfnt_off0000d1b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B3 5600 bytes
SHA-256: 5bfaf701fa6752f281ec09210b9d3b9c75e60d8beb8d8a728d983d3d4f5ba7c7
font_02_sfnt_off00010ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB8 12408 bytes
SHA-256: 53b791f8991db59e5d889d3ea112cd0d5d222d57dddcb36f859528d831ce6c26

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