Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb8204636dbc051…

MALICIOUS

PDF

197.3 KB Created: 2021-03-22 02:04:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e504e91fba86c430b237694c5934d904 SHA-1: 2010378a51abeae23f7e5f26b49aaa29be0e26b8 SHA-256: 1eb8204636dbc051a625d02bb08094f59f15a0943f4edee9b0c260f6c9d27741
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by a ML classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be related to an admission form, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9611

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://soxebez.ru/123?utm_term=rte+25+admission+form+pdf PDF link annotation
    • https://gatepeduvemixif.weebly.com/uploads/1/3/4/6/134669895/zitaku-wezatajomibutef-gogefedanuj.pdfIn PDF document text
    • http://sokavosutab.22web.org/is_bosch_the_best_dishwasher.pdfIn PDF document text
    • https://latimemoniborij.weebly.com/uploads/1/3/1/4/131437487/42b022.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383698/normal_60461ae6e0578.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421333/normal_5fee8bcc3f669.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445101/normal_5ff7792536728.pdfIn PDF document text
    • https://fegopamaxu.weebly.com/uploads/1/3/4/8/134896151/9284d1a.pdfIn PDF document text
    • https://vixadabunukup.weebly.com/uploads/1/3/4/9/134902839/damimojo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393041/normal_5fdb2bafcc9d5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/42314dbe-acb0-470d-9035-1294dee0c999/78775660191.pdfIn PDF document text
    • https://264cdfe8-48fc-440e-bff3-938583425051.filesusr.com/ugd/cd20dc_a078cb7cacca4de8a9f7d0d1884f460c.pdf?index=trueIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_12d6429ccd964b5fa226ba2807f9e470.pdf?index=trueIn PDF document text
    • https://c4a5d104-04f9-44e6-b03f-1f5edac3680f.filesusr.com/ugd/f23921_e253149bdb69442ba4333b748a5da1fc.pdf?index=trueIn PDF document text
    • https://46d16763-6c5f-4e19-aa2c-3f4071fcbec2.filesusr.com/ugd/26f730_5bdf34f8035a451591e9dedca709931f.pdf?index=trueIn PDF document text
    • https://21c505bb-01ca-4817-a549-4ed1ebba5040.filesusr.com/ugd/7d7105_75cdcdc5264849afb7db24d629b478a2.pdf?index=trueIn PDF document text
    • https://f27bca7f-571c-471d-9e77-92385e6dfcd0.filesusr.com/ugd/9a0fa1_587d601e13df4b3d85b5371beca34d3b.pdf?index=trueIn PDF document text
    • https://770ad53b-b55e-4e58-b1eb-3709f41304f7.filesusr.com/ugd/98e298_278841327c5c458b9369aac2ad2ecc50.pdf?index=trueIn PDF document text
    • http://mafolizol.rf.gd/commando_2013_full_movie_free_480p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de04e9e0-c79e-4d68-9af0-5a24c49036e9/magekepivimiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1870c95c-577f-42f1-acb6-2550fec19575/stock_market_crash_bubble_pop.pdfIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_3647f67701454250a6461935b2503119.pdf?index=trueIn PDF document text
    • https://b1706aec-e9b1-4c6c-9a93-f14ef4a1c402.filesusr.com/ugd/3b47cb_d732cbbb25dd4f8585c7089ebfe92aba.pdf?index=trueIn PDF document text
    • http://katasekut.epizy.com/25141360797.pdfIn PDF document text
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_05f59c5efd014f65bb409fd732f4bd91.pdf?index=trueIn PDF document text
    • http://nakabamafirek.epizy.com/36934922861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/727ba645-838c-4636-8855-d6afd98263c7/bash_script_replace_variable_in_string.pdfIn PDF document text
    • http://kekusilubuf.epizy.com/boy_scout_merit_badge_worksheet_citizenship_in_the_world.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000181f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x181F8 101980 bytes
SHA-256: bad2b1501119f117d401c8bcfb83275e79b8334dd9406ade77a49f014f4ec389
stream_007_off0002e958.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E958 18448 bytes
SHA-256: 69b875f4fef63d98b5c2e15da7ed3ce2d96cfc9902aac093a05fe6addfed620b
font_01_sfnt_off0002b1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1F1 5416 bytes
SHA-256: 0201d56ae0a5b3bb7522c0444ff74604371da8c4bab1183b6e5abd62d5c4faf6
font_02_sfnt_off0002c452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C452 11228 bytes
SHA-256: 2a23138303ccc794751091af88027ac4676d309244c845f2df7b4f2a94063893

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