Malicious PDF — malware analysis report

Static analysis result for SHA-256 c606c0b4298013f4…

MALICIOUS

PDF

232.0 KB Created: 2021-03-25 00:21:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: d8e91976d6569466659895d45d3a750a SHA-1: ea98137d42d3d268442df540d6709e6d38844dd3 SHA-256: c606c0b4298013f4601eb2e9e7e1b399f2f77f174a7d771484c997adbd2ebcfb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URL that redirects to a search query for 'Rifts world books 6 pdf', likely as a lure. ClamAV detection and ML classification strongly indicate malicious intent, consistent with phishing or malware distribution. The primary IOC is the URL used in the lure, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://xajibur.ru/wix?keyword=rifts+world+books+6+pdf PDF link annotation
    • http://creditinquiry.info/larelowuph2ot.pdfIn PDF document text
    • https://cdn.sqhk.co/bobofibu/JRhORje/funny_30th_birthday_gift_ideas_for_brother.pdfIn PDF document text
    • https://cdn.sqhk.co/dapubebireba/jbq7Zge/16922864974.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/jfhfOhg/30382497968.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476750/normal_5ff683f808c29.pdfIn PDF document text
    • https://cdn.sqhk.co/fasixazijaz/cFijGJx/masujebipakatovilegi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426955/normal_5ff59cb512559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_6031de0696894.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401519/normal_5fe346ff4260f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_602d3a52795e5.pdfIn PDF document text
    • https://cdn.sqhk.co/sinupupuzaxa/KZjfEgh/99296027775.pdfIn PDF document text
    • http://smartcoin.design/refesurepadoxet82o9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_60483775c67ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379852/normal_60196713848ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416319/normal_5feb5bc5c285e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4ab51db4-2ab9-4ce7-8cf9-a7235cd4f8a6.filesusr.com/ugd/c6359c_8ff0133872314bc98f80f740afbed1f2.pdf?index=trueIn PDF document text
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_90c1b52a43bf41b992e6afff955a3529.pdf?index=trueIn PDF document text
    • https://d52369c8-37f2-40d9-9d5f-d682b3b4a2e4.filesusr.com/ugd/6d5a7b_7f2e2422dd6d49bb9eae952b039d63dc.pdf?index=trueIn PDF document text
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_65c99aaf528345bb98389b3a2ccd9485.pdf?index=trueIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_f9ef76d2bdb744898ecacb8a07c01939.pdf?index=trueIn 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_off0003565a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3565A 5284 bytes
SHA-256: 07e2b677e0dc6405ee093184f753a7516506bee952f599daacb94a6c98133fa3
font_01_sfnt_off00036876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36876 12724 bytes
SHA-256: 67da9b68ba3cca8e21b8aaa6321b294e47e2f1ffb42fd4f9b4f7c222fde27d1f

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