Malicious PDF — malware analysis report

Static analysis result for SHA-256 488455399ed7b594…

MALICIOUS

PDF

78.7 KB Created: 2021-03-17 00:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e25806498210922df1493c18966506e SHA-1: 33f4de68b54dd5a5917691026bd5cf525f1005bb SHA-256: 488455399ed7b5948b83d53f4ad0d53dcd08bf15eb2c8850fb7f929b31f549f6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily corrupted, suggests a lure related to a 'hero guide'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://maypoin.ru/wix?keyword=mapleroyal+hero+guide
    • http://maddot.space/where_does_walgreens_do_covid_testingw5vuh.pdf
    • https://cdn-cms.f-static.net/uploads/4464319/normal_600fef36c994f.pdf
    • https://cdn-cms.f-static.net/uploads/4449602/normal_60486789631b1.pdf
    • http://consumer-data-protection-bureau.com/finaxajazimzi5nc.pdf
    • http://puveputado.sportsontheweb.net/los_angeles_zoning_map.pdf
    • http://kewatupu.scienceontheweb.net/pixogaselefed.pdf
    • https://static.s123-cdn-static.com/uploads/4452587/normal_5fdd6ef1d1663.pdf
    • https://pitulero.weebly.com/uploads/1/3/2/6/132683003/fuwebajatodoraw-duduzodudofab-penenelelodo.pdf
    • https://cdn-cms.f-static.net/uploads/4413346/normal_601a9d39e9d81.pdf
    • http://raxejudesezix.scienceontheweb.net/excelsior_definition_greek.pdf
    • http://pumorux.medianewsonline.com/multi_code_receiver_1090.pdf
    • http://tehnotop.site/valokopyjy.pdf
    • https://cdn-cms.f-static.net/uploads/4446649/normal_6031cf87b8c4e.pdf
    • https://pabelazulutibus.weebly.com/uploads/1/3/1/0/131070827/9dd30a009864.pdf
    • https://notolunezoxab.weebly.com/uploads/1/3/4/8/134846452/8a93a5245325c4.pdf
    • http://scandisvet.ru/do_timex_watches_need_batterieshn0x4.pdf
    • https://cdn-cms.f-static.net/uploads/4421048/normal_6034cd565c953.pdf
    • https://static.s123-cdn-static.com/uploads/4470830/normal_5fc85373576c8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdd249b8-77b1-4a94-b024-8995efe4d959.filesusr.com/ugd/d394ff_a364ecfd8c3a48ecaeb571c69d106d2c.pdf?index=true
    • https://24976a62-ea59-4ca6-8500-d0bd08f9a094.filesusr.com/ugd/65a075_cbb9e0c7a061495794ef5fa818aeb595.pdf?index=true
    • https://ff9dba89-6132-4485-99c2-ace8a2453124.filesusr.com/ugd/c3f59f_9b93261f37084846ac51faab06aba643.pdf?index=true
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_492d2c1625174cef8019f059acab4bfb.pdf?index=true
    • http://nisetekotixob.myartsonline.com/present_perfect_continuous_esl_activity.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f485.bin
7a0fc3e2ea847a9f5392cd80977ff0b226543d34256a9628e4828000d23fe907		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF485 5152 bytes
font_01_sfnt_off00010619.bin
44b308d917751cf0e0c8c37d712f4d3860c87614cdaa34f4bb72ffafa63c6c78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10619 10896 bytes

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