Malicious PDF — malware analysis report

Static analysis result for SHA-256 3941b9ae81aa1e6e…

MALICIOUS

PDF

85.9 KB Created: 2021-07-16 20:20:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4df459692bbb23d4700d43f9029b49b6 SHA-1: e77ae183dbc4201767811338f8a27eeed0f04096 SHA-256: 3941b9ae81aa1e6e4cde6acc4ed284ba3db24a728bd88bc6468485fc4820ec0e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains embedded URLs that are likely used to redirect users to phishing sites. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest an attempt to trick users into visiting malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/~3/4Ji06Fp1PxY/square?utm_term=dairy+free+pate+a+choux
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8adc1638d7a52b73e98ae/1625861569158/mimedesaj.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec833a59713006cbe1682a/1626112827052/65058027219.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e81e17adf2c26882034292/1625824791269/65578025853.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee1bdbeed6cd77ab5f93da/1626217435331/zinusunugexa.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8301bf29cd6423db7c8a6/1625829403508/amfi_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f1684815846f0d14ed8d0a/1626433608351/diwiloluxidip.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec77f9fa40056e74d1173e/1626109945442/vufiwafeloxarewekavurime.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee49c6f72ce0266e10b0b3/1626229190374/1_2_freddys_coming_for_you.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efe174c57e07264c1fbdb1/1626333556447/the_great_awakening_of_the_mid_1700s.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7357288cf71862a7e7cd/1626108759157/95306625300.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d42f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD42F 16792 bytes
font_01_sfnt_off0000ec40.bin
e9a704d00dd6e8ff808373eafce3a9164bafc01e3896b7f7a96cfc50231b2c9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC40 16392 bytes
font_02_sfnt_off0001026c.bin
adb960df13c9f80c3ee58df4d6c6cd51a532be93c80b29d41b19902dacf5aa7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1026C 17980 bytes
font_03_sfnt_off00013132.bin
d2be8502f012fd3ca52cba140beb0519cf63f6d6bcce4be20232392c7eeeda24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13132 10576 bytes

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