Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71cb6385a5ef02a…

MALICIOUS

PDF

82.1 KB Created: 2021-07-14 05:10:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 31d0705f22721a12a27cb3ae15ac16b0 SHA-1: 3502a587852a34d23cde2c19dc0896f9a035af4b SHA-256: e71cb6385a5ef02abf0610bf3048afa00ce48dea343ef0f4806ce03e2051e9ec
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to lure the user to external resources, potentially for further exploitation or phishing. The file's structure and detection by ClamAV as 'Pdf.Phishing.Trojan' strongly suggest it is part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://feedproxy.google.com/~r/razvivatel/yapz/~3/gPkW7oTCsL0/square?utm_term=beer+manufacturing+process+pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec825340121f566899d969/1626112595877/zeseputajiwekoxa.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eca2ba58d864752e040a1b/1626120890769/two_types_of_lateral_meristems.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec78ddc8b0d544b6d6907f/1626110173587/in_every_case_meaning.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec78fd700aa07a7893b8fc/1626110205611/68939002031.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed8e289db072196a23de6b/1626181160576/mount_kailash_in_which_country.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7816fa40056e74d119cb/1626109974682/guide_to_analysing_companies_the_economist.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec82a6b6dedd3ae1689ff2/1626112678764/jobs_i_can_do_alone.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec872a3f7a034ccb7b0176/1626113834178/commonwealth_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9b8cdef1ca41d5fb6d42/1626119053145/lenidagibunitododeri.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edb80b3680ef421b576017/1626191883684/13093171366.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7df1a7e45264421f8dc0a/1625808666456/types_of_auctions_in_e_commerce.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee1d85537273346e2d3b0e/1626217861229/suvuk.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e04e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE04E 16792 bytes
font_01_sfnt_off0000f865.bin
cc0f8b70c34433cd86ed605aa5763afeb740d932fb2b230819a0847294827304		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF865 11072 bytes
font_02_sfnt_off000111fc.bin
dd028a2e24c01f43f06f9efaa56fe9e985a6d1d0e7a90a5d0757cb8b00695d14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111FC 16396 bytes

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