Malicious PDF — malware analysis report

Static analysis result for SHA-256 315ea0f95f248273…

MALICIOUS

PDF

133.6 KB Created: 2021-03-21 10:25:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fefdc30cd3f5076ab0a5090621d8e9dd SHA-1: 14c4cfca19dbdb524c955b7b5990e17b67d393c0 SHA-256: 315ea0f95f2482738eee96889795e329d112b2c92e8b2735eb6fbca1ce10f4a6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a phishing page disguised as a technical guide. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest the PDF is designed to redirect users to malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://seumenha.ru/strik?utm_term=how+to+pair+logitech+wireless+keyboard+k330
    • https://static.s123-cdn-static.com/uploads/4408873/normal_600332d161ffd.pdf
    • https://cdn-cms.f-static.net/uploads/4488817/normal_5fe87f543677a.pdf
    • http://greyfruit.space/894190800389wrnv.pdf
    • https://static.s123-cdn-static.com/uploads/4483586/normal_600398bea6e4b.pdf
    • http://airbin.top/70733138646qtcbf.pdf
    • https://cdn-cms.f-static.net/uploads/4487200/normal_6054e6c18284f.pdf
    • https://cdn-cms.f-static.net/uploads/4387046/normal_601dd0433bce1.pdf
    • https://cdn-cms.f-static.net/uploads/4490539/normal_5fdadae48d584.pdf
    • http://3203epworthcres.com/85903349810yqalp.pdf
    • http://usacreditreport.info/how_to_start_a_senior_farewell_speechedw5s.pdf
    • https://cdn-cms.f-static.net/uploads/4475997/normal_60318c3159665.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.orgThis
    • http://www.fontrix.comhttp://www.nhncorp.com
    • https://1e16f6d7-285b-4488-bf07-d3e24ac90e20.filesusr.com/ugd/417718_e4e8e8a1a1bc4ca385333287491a4328.pdf?index=true
    • https://7a3463bf-3117-47cc-940f-ad9d50d05675.filesusr.com/ugd/9f2514_f04d72bbc08440b3acf6c038a1e36a30.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1462d3f5-b4cc-48b1-85d2-0720bf587cf5/tableau_public_manual.pdf
    • https://746420f6-3007-491b-ba72-fd43be5094e5.filesusr.com/ugd/277b62_de809d5194094bb4bbc50586f4cf294d.pdf?index=true
    • http://datasagedabisu.epizy.com/c_a_g_report_2017.pdf
    • https://770ad53b-b55e-4e58-b1eb-3709f41304f7.filesusr.com/ugd/98e298_76fa0f0ba45145579e8e4c6b4cb09994.pdf?index=true
    • https://uploads.strikinglycdn.com/files/24f8970a-8cd2-42ee-9ba9-f51bdad7e68a/frigidaire_mini_fridge_owners_manual.pdf
    • https://0dd4521b-3e41-4083-9bcc-807cce03ae78.filesusr.com/ugd/cfe2e9_c949ff1fff4d4caea4ab43b0a66baaff.pdf?index=true
    • http://wubavon.epizy.com/alimentacion_saludable_peru.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
    • http://scripts.sil.org/
    • http://scripts.sil.org/OFLAbyssinica
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa26.bin
748827fe696f0f37584eacb78c50fa5e3035d7fdce564f3586a2e91dae7aa2e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA26 6000 bytes
font_01_sfnt_off00010e9a.bin
0e295b45b7733059d9cecfae2074049a183fdd1ebced90b705b9821d2ca82c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9A 21976 bytes
font_02_sfnt_off000131f2.bin
f6edc08813a4c34bb3126dbad6199e2daf4b25bae597607b11fc6a9429dca3db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131F2 5596 bytes
font_03_sfnt_off00014744.bin
fb33c47fa43d4924ef9e01e0283ff3e833e2deec104fb385ab6ec67c176fa53f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14744 12632 bytes
font_04_sfnt_off00016f89.bin
847ff65680611eb7fd63e3e8e9beb1334f68e9b82b855234562e68f95ee0b7c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16F89 16628 bytes
font_05_sfnt_off0001868e.bin
16789df36024452a692ca4d7aba196a8fd3af5363a2cfcc97bd6343458e81a60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1868E 58512 bytes

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