Malicious PDF — malware analysis report

Static analysis result for SHA-256 d758df16e7fe1bec…

MALICIOUS

PDF

87.3 KB Created: 2021-03-19 22:32:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b49f53a613dcf5ba856c0301bd49a005 SHA-1: b3662033e838cfa2a33c6de11d3bae7fc3f9dde6 SHA-256: d758df16e7fe1bec0141dfc595835649c6deeef8e5d27d53a5355a0924a04f9a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to news articles, aligning with phishing tactics. No scripts were extracted, but the presence of external URIs and the overall malicious classification strongly indicate a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=journaux+algeriens+el+khabar+pdf
    • http://stavki-na-sport.site/72727464768jhrko.pdf
    • https://jagavovukivotu.weebly.com/uploads/1/3/4/8/134881855/ca3e667.pdf
    • https://static.s123-cdn-static.com/uploads/4494433/normal_5fc6b0f24eefe.pdf
    • https://cdn-cms.f-static.net/uploads/4403946/normal_60506b7118333.pdf
    • https://xesamubi.weebly.com/uploads/1/3/4/0/134095888/jiziziralamareluvar.pdf
    • http://sk-anker.ru/734827671020xx70.pdf
    • https://static.s123-cdn-static.com/uploads/4366311/normal_5fe3a9eb4a997.pdf
    • https://static.s123-cdn-static.com/uploads/4367687/normal_5fc86bffcb7ba.pdf
    • http://ylyn.ru/3d_heart_drawing_tutorial85mt0.pdf
    • http://static-get.top/el_hombre_mas_rico_de_babilonia_audiolibro_completo_descargar_gratisx2ybw.pdf
    • http://rofuxipof.mywebcommunity.org/brother_hl_2280dw_manual.pdf
    • https://cdn-cms.f-static.net/uploads/4464053/normal_601b8093368f9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_99ab5ba62f1d4b1281c39dbab6e884b1.pdf?index=true
    • https://6da1ed31-7a22-45b0-8bc5-463d376071ee.filesusr.com/ugd/29fbaf_00d4d22255844de9a38dd063ebda98d9.pdf?index=true
    • http://zijiwaras.onlinewebshop.net/hobart_d300_mixer_parts_diagram.pdf
    • https://s3.amazonaws.com/ligole/9754805710.pdf
    • https://s3.amazonaws.com/sumesawoxajew/fomodujoxutapude.pdf
    • http://kipazafar.atwebpages.com/fivutesaj.pdf
    • https://s3.amazonaws.com/kifutizijebuj/27606076391.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00011a40.bin
2d0b4ad24f6506211ef148552389133bd22dcbbb3a15b7122055866f651ca3b5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11A40 29708 bytes
font_00_sfnt_off0000e3ce.bin
92101e4191ce5b4c9b1f1388917dc822c862e021a557c8a6955930d8a88483f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CE 5564 bytes
font_01_sfnt_off0000f6b0.bin
1e7c4a3452f25964d384f28d228eb91d53b4073db301166b69bbff727f30a187		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B0 10448 bytes

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