Malicious PDF — malware analysis report

Static analysis result for SHA-256 211f7fbd3b01df67…

MALICIOUS

PDF

83.1 KB Created: 2021-07-21 17:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 783149da3e32d538bd292e27195fdcdf SHA-1: 0d21a9d2051427d554d6226489e2faf813b35e9c SHA-256: 211f7fbd3b01df670c2db546fba70ed6fbf290cebadebbcb44daab39a1eb6f58
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier returned a high probability of maliciousness. An external URI pointing to 'garglob.ru' was extracted, which is likely a phishing lure. No scripts were extracted, but the PDF structure and heuristics suggest it is designed to redirect users to malicious content.

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://garglob.ru/square?utm_term=toad+in+the
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca8979a1cf201f8087b6f/1626122391607/28318088660.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f7426686120f686ca5b23a/1626817126564/stravage_in_a_sentence.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee2f119c71001bedf4f16f/1626222353149/texas_donation_request.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f5a036eceeb50d65b3a48d/1626710071175/1731757550.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e91a36b10b9b33fa978184/1625889334860/93956239204.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f5e6ac4b94047949625d38/1626728108990/81603740667.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f65fb363e6e7306e6ef087/1626759091678/ribiboxabobuf.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f257e9d68f3225904f262b/1626494953984/ntse_maths_questions_with_solutions.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f571c729712869f080aebe/1626698183123/is_giving_birth_more_painful_than_getting_shot.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8d54c54da9c6696c5ae80/1625871692970/should_i_workout_on_an_empty_stomach.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e79881ce8457037edee2f3/1625790593593/this_is_just_to_say_william_carlos_williams_analysis.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f6199b028f4205a4b62e86/1626741147777/oh_you_had_a_bad_day.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7e5128f757b1ac4520322/1625810195056/62818192496.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f7e3bc6c9f8c4332446d9d/1626858428602/home_remedies_for_enlarged_spleen.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f1c66a7ce094177fb5ecb7/1626457706428/22907478444.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2cfb46d5e991e36d98bf0/1626525620889/28754570561.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f597d1e47b60730cfc2052/1626707922101/89839459741.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efc9851e1165054c9194f8/1626327429493/bereposutejik.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f3b9788a396f1703a36dc4/1626585464266/th9_gowipe_2020.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f546db1d3507074235d982/1626687195358/xilagunive.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f07da61fd42f24c9260703/1626373542438/foxeseju.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_off0000e3e1.bin
0829faadb5985c4b2bdc4f31d5ccde4bbf7354dcb29b098a619a26cea8252e70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E1 16988 bytes
font_01_sfnt_off0001103b.bin
8e611b03d3dcc7daa698cee5d793b258e2eb7a7b6e3da3f3152b201d819647a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1103B 9992 bytes
font_02_sfnt_off0001264b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1264B 16792 bytes

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