Malicious PDF — malware analysis report

Static analysis result for SHA-256 d007a3a3031f8e40…

MALICIOUS

PDF

83.3 KB Created: 2021-07-23 19:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3f68c52cceae9637963bafb3e66c73a3 SHA-1: 2f655b721ac8a9b10a009ce3c0684cf69372460e SHA-256: d007a3a3031f8e40b75b911196bd0247a48064fb271b9a1a6234631d525addd2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate this PDF is malicious. While the document body is unreadable, the presence of embedded URLs and the PDF_URI heuristic suggest it is designed to lure the user to external sites, likely for phishing or to download further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/~3/4P1vZUbBa90/square?utm_term=bell+hooks+feminism+from+margin+to+center
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60faa49acb51860d997b1476/1627038874320/in_the_autumn_of_my_life.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec92a680388a1034d84ec8/1626116775382/43888469872.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e957a22dabf27235560019/1625905058633/abstract_reasoning_aptitude_test_with_answers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec904f83836e7a7d61ce5d/1626116175719/developing_leadership_character.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f174ba0a71fd0da9b07b45/1626436794762/95686349032.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f28a274b68c137e6935f86/1626507815137/56588990838.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca88fe4ca3800a11b4e40/1626122383363/i_had_enough_meaning.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efddaf34da7a51e3f2867b/1626332591261/92290787934.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f29d577f94c710fbbd7e10/1626512727708/jeremiah_33_and_3.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f3f034689a653fd29d59c2/1626599476647/85867712462.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec905590a3fc49531a532d/1626116181412/c_and_d_waste.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0e1e55554232196b8cf32/1626399205560/cold_call_script_to_get_appointment.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e9453dc14ff043cd5e0392/1625900349863/film_after_life_streaming.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f19f727ab7c5432f48d845/1626447731007/3167653629.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee912b537273346e3434d3/1626247467423/ribobuxelu.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f69c7ef33e0229264d4bdc/1626774655063/kugutabodirarozal.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f45ac4e13ee97666122b09/1626626756422/perebubenaxaromu.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed1791af5561712121f1d4/1626150801305/how_to_convert_picture_format_to_word.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_off0000e226.bin
82b71f0917edc230bfdd0281e4f1aad5fe6fd080e401b63a493a95cc64b66846		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE226 17120 bytes
font_01_sfnt_off00010f05.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F05 16792 bytes
font_02_sfnt_off0001271c.bin
057e4f849563e685ca9489667845fa93a9fc32ccf604d8d9111bbde0804890c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1271C 10928 bytes

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