Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6506cb54937e02…

MALICIOUS

PDF

85.2 KB Created: 2021-07-22 00:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fd8614be3778bfe5cc1e835956f3162f SHA-1: 61172a511026f24b30203a82ef52293398c10491 SHA-256: ce6506cb54937e02e0c747976726fed6e44d78feb8548d1c02ab9577b17514ad
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to external resources. The PDF structure and embedded content, though obfuscated, are consistent with phishing or scam lures designed to trick users into downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/um1bUVUAM38/square?utm_term=data+structures+and+algorithms+notes+pdf+free+download
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f499e2cba7b71501f44a66/1626642915243/paneer_curry_for_poori.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7c1ee4aaab0286a897cfc/1625801198500/we_need_to_talk_about_kevin_review_book.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f826e10c54d004eeb18bf1/1626875617598/67897906972.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f2bb726c177f33d79b6665/1626520434408/mejopaforodi.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c6e3dd5c0c1026eee613/1625868003887/8383162425.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8d128cb474813b85ba7a4/1625870632551/relexulogududepamakizeti.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee721b39b82603386d4ab2/1626239515762/49129367441.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f06a0bd062d015cc3d8d2a/1626368523166/65721890752.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f88e23bcd3bd793296ee09/1626902051715/screen_stream_mirroring_pc_download.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e879cd2ec5cc102389f248/1625848269401/epf_withdrawal_form_download.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8ee29e6bd1231e6058367/1625878057449/nail_shop_on_florence_and_vermont.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f3a799deec5816203331b5/1626580890054/73258461924.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f33bab5f13a15bd81dad5c/1626553259622/personal_objectives_examples_for_cv.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f6ed0663aac54e7fd0a59c/1626795271000/penalty_waiver_request.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0778fd8d49b3972726e56/1626371983768/stress_physiology_in_plants.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e83f2abf61d063766ae2f4/1625833258848/97897488336.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f3cd4adb752c5e49b0903e/1626590538833/3745396334.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f6d02495c8ad232d445549/1626787877062/zoriwemirafovujexi.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f5cba5d8d1ec76cd6f8169/1626721189412/black_and_brass_coffee.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f61abed62802464e3a6cb5/1626741438391/how_to_properly_quote_in_an_essay.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f3ec3ad68f3225905f49e4/1626598459031/17290452084.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_off0000e916.bin
ac95e0aa8c934e9bf29f35ca821da27c966c7e32ef244cbc1fb69753ed7f90e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE916 11252 bytes
font_01_sfnt_off00010324.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10324 16792 bytes
font_02_sfnt_off00011b36.bin
f419c3f5a2a5c7dd83ebad6aaf37207411da235278dadb9d6200fed6e7c8735d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B36 16748 bytes

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