Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0595429bb5e1125…

MALICIOUS

PDF

76.2 KB Created: 2021-07-13 09:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ce78a9bd9457a2bfeeec17154ee3ed45 SHA-1: 0c52ccdda6f4ef58d1f1dd4d8498904d07206e66 SHA-256: c0595429bb5e1125597f7287d388c5d1749f2cf9257104e9a67938469fffd719
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs, one of which is flagged as potentially malicious, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of embedded URLs and the overall detection profile point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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/sq/ugae/~3/UZrB20b2Dcg/square?utm_term=harley+flh+for+sale
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8754402743737596e3b5/1626113876938/defodaj.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec97a67d354a5e86a4b69e/1626118054236/wings_mod_for_minecraft_1.16.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecbc5b49c8ff6678146e83/1626127451158/mexegazukubabizinamej.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed2785094bb21e9991d520/1626154885101/76857583632.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7a2557e45264421f58566/1625793109721/secure_email_outlook.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e94e495fa2eb14b90d2ed6/1625902665423/laluvo.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8ff2b085b1c120f967d5d/1625882411407/no_whining_meaning.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e785713cef58512b1cc395/1625785713364/the_mixed_up_chameleon_coloring_page.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed15bd06893039839783b7/1626150333592/tamil_christian_songs_keyboard_notes_free_download.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8cb36af17b116dc5e533c/1625869110841/pes_2020_ppsspp_file_iso.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_off0000c8be.bin
a7f14482cb81968de0d1391628b2af398eec65aada9f20b3c0a798a8b65662a1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BE 17308 bytes
font_01_sfnt_off0000f617.bin
0e7afcc9fdc370eb0d6b98d0f6b75d1825aa629e911376c740261b133762643f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF617 10124 bytes
font_02_sfnt_off00010cd1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD1 16792 bytes