Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f59eadd6093ebce…

MALICIOUS

PDF

70.7 KB Created: 2021-05-06 12:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 980f9fee1df0b013982a0830682bd7b0 SHA-1: bb75c2f54cc060baf1e23d11bd66b77027b6cc82 SHA-256: 7f59eadd6093ebce2fcfed679a64dbb0881a7dd76254436b34a72648beca926d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of multiple embedded URLs, many pointing to suspicious domains and file hosting locations, suggests this PDF is designed to redirect users to download further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly imply a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/8ff265cdbb07f7956ede5e261c275eda/37026898353.pdf
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c783d4bd0d---pasitetil.pdf
    • https://anmoul.com/userfiles/file/64603903644.pdf
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/08bf70f32049c14bdc505eb0255b6637/vonuwomiruwo.pdf
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607542d64af2d---pumelonuwi.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/9259685032.pdf
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/094f7adcc6d58199c305d0e547143b4f/zegomaxusunodifazaf.pdf
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609241302efd1---58001825257.pdf
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/j6mck6cnmcu6cdf3vd9iqietfo/667153773.pdf
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087e23129f75---28972960663.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/51sh2ebethttf12bi89sifc8v1/76881979332.pdf
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/9e2ib28ed85149u5ug59216os3/22195389252.pdf
    • https://www.foundationofhope.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607f95af06e45---87598203261.pdf
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16081ac7307026---robutusololen.pdf
    • http://bafiti.com/sklep/userfiles/file/39279173412.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad6d63fb01---23887654443.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=linking+verbs+worksheet+with+answers
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc39.bin
c5cc45ad3b942c1960b7a343490590d1e0371ee6c272ea5ac24051bbb1235185		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC39 5212 bytes
font_01_sfnt_off0000ee10.bin
23050704bdd6eb0728db23f5b145e4864538a16ed09dcdcf094277dc216f35b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE10 10740 bytes

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