Malicious PDF — malware analysis report

Static analysis result for SHA-256 5573bf00068e2599…

MALICIOUS

PDF

218.7 KB Created: 2021-04-02 15:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 934cd7af2734c0a40b0f30e14c60dab4 SHA-1: 555f5ebb22ffdb739a8db9ba5263907bf66b5cb2 SHA-256: 5573bf00068e259984e4399b5cfc120822d2465b0141a486370725948bf2a1c9
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. The document contains an embedded URL, 'https://jacksth.ru/wix?keyword=fgo+jp+apk+qooapp', which is likely used to redirect the user to a phishing site or download further malware. The presence of multiple PDF-related heuristics and numerous external URLs further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9861

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://jacksth.ru/wix?keyword=fgo+jp+apk+qooapp
    • https://cdn.sqhk.co/kifuzopeko/cbA17hb/60165281222.pdf
    • https://jodalutuz.weebly.com/uploads/1/3/4/4/134444421/6580986.pdf
    • https://tulosiwawi.weebly.com/uploads/1/3/5/3/135326734/3776600.pdf
    • http://stavki.link/napakawefojnx0m.pdf
    • https://cdn.sqhk.co/totarujined/Ohjhiie/78809876676.pdf
    • https://tulidakavixesa.weebly.com/uploads/1/3/5/3/135347336/1df3875.pdf
    • https://cdn.sqhk.co/geruvijiwiw/QJjaV8b/when_does_the_cw_shows_return_2020.pdf
    • https://cdn.sqhk.co/badilapo/hlmjv8R/63477991330.pdf
    • https://cdn-cms.f-static.net/uploads/4506200/normal_601bc701b93bb.pdf
    • https://cdn.sqhk.co/dodufiruw/gcjOCI5/4034307419.pdf
    • https://cdn.sqhk.co/satukevaguka/0Fwjiha/robot_boy_cartoon_series.pdf
    • https://cdn-cms.f-static.net/uploads/4386842/normal_601ef4a8506fc.pdf
    • http://krepezh.guru/campark_t45_power_adapter67202.pdf
    • https://kosukanawator.weebly.com/uploads/1/3/5/3/135304621/susezageneke.pdf
    • http://gramnews.xyz/converting_money_worksheetwv4o2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/poresi/the_standard_apartments_scottsdale_reviews.pdf
    • https://s3.amazonaws.com/sefukirexuwekij/what_is_sat_essay_subscore.pdf
    • https://s3.amazonaws.com/kumasala/nefikobarixa.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101e6.bin
1e00eb258a9b56c701599c8b57d78ee70e3c5b81666550eb5fc66c96abee0dcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101E6 172080 bytes
font_01_sfnt_off0002fcaf.bin
5bca305c45b493b8f97b948dcf5ceb17974665c2ff1deb206469ec9b5edb56d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCAF 4340 bytes
font_02_sfnt_off00030b74.bin
736b9ad2413763428d500c512597d1d716f4f51e474703a24a3fde47dadfc6be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30B74 15232 bytes
font_03_sfnt_off00033862.bin
d56e3631ec372d8794e914620273984f472e419e783abd1b92b7b0d585a36934		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33862 16420 bytes
font_04_sfnt_off00034e7b.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34E7B 4324 bytes

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