Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b89f3e0cf0036d4…

MALICIOUS

PDF

83.9 KB Created: 2021-07-22 02:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 397e77a1bca23d7854e77350a8ce054d SHA-1: 87150a907c71c5589923f561f3813857ba38dbe0 SHA-256: 5b89f3e0cf0036d43e0fe2bc0367cdf3901be26f7a981c37e472e8a845b8a05c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URLs, although some are marked as benign, suggest an attempt to direct users to external resources, potentially for phishing or malware distribution. The PDF structure itself contains duplicate objects, which can sometimes be used to obfuscate malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/~3/5VO7y1TeAqQ/square?utm_term=class+10+science+question+bank+pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f73ec7b972fa3c99011c9f/1626816199703/serenity_point_topsail_island.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7ba824d2175279d11c541/1625799298919/kevakuxujomezekazatu.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed93978b02447bbdda74b2/1626182551169/db_front_rack_lunges.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee70a08685745b7d1807d6/1626239136076/marcus_garvey_life_and_lessons.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7b103a853d606aeb8ab8/1626110736817/meaning_of_abortion.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f15a3846c0d74f87e0b9ad/1626430008641/best_young_goalkeepers.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f2a0b02e59700d3e5630e0/1626513584706/wavowujetukabogogariz.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8116a7d3b385c94b7a4fc/1625821546616/13092150743.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f285e0e13ee97666ffb0bf/1626506720886/introduce_yourself_interview_fresh_graduate.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edf54d10369373fd865938/1626207565930/total_fat_saturated_fat.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f427bc3a33e4096de3b98a/1626613692401/22502918959.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f01239e00eb31d7cee4b6d/1626346041401/15117533786.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecabefb3b63f0898f5c7e6/1626123247491/how_to_make_a_public_unturned_server.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e94a13cc7c086459280f27/1625901587535/love_marriage_and_arrange_marriage_line_in_hand.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f6c798cbdc04187b499e47/1626785688933/indelible_meaning_in_tamil.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f26a1f8c10a93e5043ed0c/1626499615479/xasimegemumagomejunewugat.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8acdf76a3323e9136b79d/1625861343094/the_very_best_of_fingerstyle_guitar.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efeb7b16a6d35a11122e61/1626336123626/51110128014.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed9fb4b2cb0e52868a0e1f/1626185652063/bikokabiziw.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f23ca46167905317cf67a2/1626487972730/nepumuxasik.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e822d448fdc2594043db21/1625826004718/xsport_downers_grove.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_off0000e53d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE53D 16792 bytes
font_01_sfnt_off0000fd4f.bin
fced3165aef65ed1c2351cd5cc492258da212317ca59a25b9cd6cc7e201ce407		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4F 16396 bytes
font_02_sfnt_off000127c0.bin
8a63576cc9f211153f4ba1875fa13af2dbeb6b4a165ee7b38a4a0260eab3f9d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127C0 11196 bytes

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