Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1fe87108b99e42…

MALICIOUS

PDF

154.2 KB Created: 2021-04-03 05:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9e6b3a6ed76f7593618ef9e4699cd8b SHA-1: 88fe3d5b05393d49ebb8f849bd051e92d8435f44 SHA-256: cd1fe87108b99e42d1976593c04370292b2fddc1a20dcd5ebb79c1e1e77aecc6
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 phishing or trojan payload. It contains numerous embedded URLs, one of which, 'https://nipisod.ru/wix?keyword=fujitsu+model+aou24rlxfz+installation+manual', is presented as an installation manual to deceive the user. The presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://nipisod.ru/wix?keyword=fujitsu+model+aou24rlxfz+installation+manual
    • http://paypallsecurity.com/how_much_does_autocad_lt_cost2t66v.pdf
    • https://cdn-cms.f-static.net/uploads/4384026/normal_5fe8c58ec2686.pdf
    • https://mitabepomumo.weebly.com/uploads/1/3/1/8/131872015/fuloj.pdf
    • http://allerlo.xyz/844341689883m5g7.pdf
    • https://gituwere.weebly.com/uploads/1/3/0/7/130740556/c0f19c21a.pdf
    • https://cdn.sqhk.co/vizinifum/iCjdqOd/261145286.pdf
    • http://supernefritroller.xyz/77899669025oqdka.pdf
    • https://static.s123-cdn-static.com/uploads/4380527/normal_5ffb6de0a3553.pdf
    • http://nely.xyz/archeage_class_guide_2019gv0dz.pdf
    • https://menuzuxa.weebly.com/uploads/1/3/1/0/131070619/kinegogejaridu.pdf
    • https://doxuginuf.weebly.com/uploads/1/3/5/3/135346615/kavunufur-gimakab-webutepemagaj-xemiga.pdf
    • https://cdn.sqhk.co/xadeviro/WijgWaV/gujamajanexopibuxobub.pdf
    • https://turonobofudub.weebly.com/uploads/1/3/4/4/134463989/pefadomob-mozukurel.pdf
    • https://jiresuzava.weebly.com/uploads/1/3/4/7/134706808/surur.pdf
    • https://geripipo.weebly.com/uploads/1/3/4/3/134371036/povekinuxezar.pdf
    • http://plsale.pro/9_months_before_october_24_2006aw1sy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://171e2b11-24ea-4535-acac-f971ec821c4b.filesusr.com/ugd/a07927_cdb4fc3f0d384d78a234b56407d15076.pdf?index=true
    • https://dacf5b84-f80e-4bd8-bb7f-22aad20a1cd8.filesusr.com/ugd/285be4_753f63c026ee40eca3504ec5369706e8.pdf?index=true
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_672896348bc44287bf12609477842f6c.pdf?index=true
    • https://4454cc88-256b-48ad-9013-c0414c72072d.filesusr.com/ugd/67e251_18d1a0c386eb4578a5d7e35a05cf877e.pdf?index=true
    • https://67dbe094-6b68-4a2c-870f-9bd980043d88.filesusr.com/ugd/cff74a_c57fffdd6f474ecab2682a843a759b30.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000212a7.bin
8031873c3e0a76b7eee616d1154e8b76399717a6e2c4bfddc3eab958d2d632db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x212A7 5304 bytes
font_01_sfnt_off000224ad.bin
926406e4cc137e74bd9b99a01081a554a4eb2c2f08abda6292befeaad31b7f50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x224AD 11976 bytes
font_02_sfnt_off00024d8a.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D8A 4324 bytes

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