Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf31b0323bb725e…

MALICIOUS

PDF

98.0 KB Created: 2021-07-22 13:35:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0c24190d95fe947235481f1110aec5a0 SHA-1: 3b8682024720ed34d037ddaad4725e349e201b48 SHA-256: faf31b0323bb725e918fa89f31511e102f0ec22148b3cba62092632e31cc06f9
96 Risk Score

Malware Insights

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

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 lure the user to external resources. The file's structure and detection indicate it likely exploits vulnerabilities or employs social engineering to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://feedproxy.google.com/~r/sq/ugae/~3/ZFaGRQ6RLlg/square?utm_term=reveal+meaning+in+marathi
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8215b8cbe518df579e2e/1626112534381/david_hume_an_enquiry.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3c87a04a1d97017a08096/1626589306973/49327030484.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f06a12e9e0d35c3b8da1f1/1626368531040/vegedalisusigako.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8e7151448b0619845c7ae/1625876246112/54778362393.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f239dc6678663e6a2581c9/1626487260493/zulunakujofak.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f58df71ad9bf1c32cf56b3/1626705399906/mudebelagafo.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8cb53d7d143313afedf5d/1625869139578/ask_answers_online.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f8e7213e109230496c0985/1626924833514/auditing_for_dummies_download.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e89e423eb59768f0a280ee/1625857602858/intro_maker_mod_apk_vip_unlocked_android.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f8d07022b0bf63072ee0b4/1626919025207/spacex_stock_ipo.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ecabad7d354a5e86a6c9f7/1626123182086/questions_on_html_with_answers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f575f61db272198fb0c9b8/1626699254481/48221537717.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f1d138dc9a3c39693b3121/1626460472519/webopapobivatu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f221c20a88cb63e5bd495b/1626481090611/windows_8_iso_file_64_bit_download.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e844f72d909c29a8325a48/1625834743564/45050770652.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f63ab1d7d722325d757bea/1626749617183/3652237546.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f55f52e13ee976661fff77/1626693458805/32434796955.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60efda8f0511021e70b3c6e0/1626331791659/results_for_set_for_life_for_tonight.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f615a0028f4205a4b5e717/1626740128270/jafutezitegev.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f47ceacba7b71501f273a2/1626635498688/ximekok.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edc4a40229956bd1318e3a/1626195108693/53811223391.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f2b4112e59700d3e56aaae/1626518545641/27473823348.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_off0001198e.bin
ebed7d686160e8bbab4fda0a7f94b4e6238daeb3edaabf44f594cd723147a304		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1198E 10380 bytes
font_01_sfnt_off000130b8.bin
51e2cd8a4e19775797b4b80688b1953318134d6900f668c06abfa04acf967be1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130B8 18836 bytes
font_02_sfnt_off000160e8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x160E8 16792 bytes

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