Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f5f3bc1befa343…

MALICIOUS

PDF

81.3 KB Created: 2021-07-16 06:16:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 06ce2015a045f87e7fe899b9c05eadf8 SHA-1: ab8889e140ecc13f8aaf79aa75e8433b1b806492 SHA-256: 60f5f3bc1befa343f5a366fd0e101cd6b9938a401808b26ec2915f4efce46d10
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of embedded URLs, although many are marked as benign, suggests an attempt to direct users to external resources. The file's structure and detection as a trojan indicate it likely serves as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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/~3/7R6buoffwiA/square?utm_term=coin4free+clash+of+clans
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edfa26cc8e436e46684dd9/1626208806262/winrar_for_kali_linux.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec8c82651b7076defb2ed1/1626115202558/80940101049.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eff0ad96309e3685aa0dd1/1626337454018/dobadutonomu.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60eff6a11a40e7189051740b/1626338977246/dumaxekadixupinokarewib.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0a78acb0a3a078aee8ef8/1626384267064/32903680097.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e910c1320dbd0de280760c/1625886913598/28251723740.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e907e7aa30721e65ee0900/1625884647911/making_croutons_from_stale_bread.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec8ef09c874e7142488c05/1626115824946/29631513062.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0516a499c44206eaeb161/1626362218218/tewoxozonopumugamapokokol.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0f2b6b348e55d1c4ef480/1626403510361/turel.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_off0000d2df.bin
5208ce665491ddf4ad3582efbb917b83f9dab1a60143d6687c643847251d770e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DF 10444 bytes
font_01_sfnt_off0000ea80.bin
54c12e4e9984a19b09e32a34b68b8f1269d85d7ac7eb4c7121c419a62ab470bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA80 26080 bytes
font_02_sfnt_off00012161.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12161 16792 bytes