Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1f0926d387110a7…

MALICIOUS

PDF

82.6 KB Created: 2021-07-12 21:06:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e88b66ac6292ce8c97940f332a5350ee SHA-1: 4600da994b6882935239ae525b9ae2ee08cb3f01 SHA-256: a1f0926d387110a774b29300342c663adf37853ebee4c4ad1b4d5aa1fd5587ad
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains embedded URLs pointing to external resources, suggesting it is used to redirect users to potentially harmful websites. The presence of PDF_URI and EMBEDDED_URL heuristics indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/razvivatel/yapz/~3/7R6buoffwiA/square?utm_term=kanoodle+extreme+puzzle+solutions
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e91d06fc46b1505827f4e1/1625890054709/funny_philosophical_quotes.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e93b7d3ba7d954d5470362/1625897853491/93315887013.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7e6ffd56f0f3612717eb3/1625810687730/72161987138.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec84625978cb5ccaaae89f/1626113122868/92286911438.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7fa872e2584f2462e7b5/1626111912263/66228642809.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e914f3f4fe78435a3a3007/1625887987356/73361278935.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e9331b8ce0e10532d343fa/1625895707711/botany_questions_and_answers_download.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e87387211c9314ad40fa5a/1625846663700/most_of_the_worlds_iron_is_mined_from.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8d48936248c265f4be295/1625871497156/pefikifotoriru.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e850169ce0113d451f4b31/1625837590270/dishonored_knife_of_dunwall.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8f99c8fb24157da6e775f/1625880989059/sonic_4_episode_1_free_download_android.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec81a85f604029b99149be/1626112424919/translate_el_from_spanish.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e77128ca42db0479fe4017/1625780520989/furatulozalajafarajep.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8f1b583ae0c490236ea36/1625878965964/what_to_say_in_myself_in_interview.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_off0000e47f.bin
af14d50c019facb1b913dfdcd9f3a3ec6345f2841340ea0f1f091b2d6b2d1c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE47F 10808 bytes
font_01_sfnt_off0000fd72.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD72 16792 bytes
font_02_sfnt_off00011584.bin
beb52a35d0d47f79aec850feab0affed593a7a15ed4db37521b541b65ad31aab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11584 15676 bytes

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