Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17e0d8d53f1af5c…

MALICIOUS

PDF

85.2 KB Created: 2021-07-22 11:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ab93068719b49ac7da098d60a8fd7d18 SHA-1: dc2cd0e14cf14eae45f5075560677521c6bca5f0 SHA-256: d17e0d8d53f1af5cd63dcf4f7458766b17852f10b4d18e0f173bba3453746f87
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests a phishing or redirection attempt. The PDF_URI heuristic firing points to an external URI, which could be used to host malicious content or redirect the user. No scripts were extracted from this sample, limiting the ability to determine the exact payload delivery mechanism.

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/iXsW93xxTQA/square?utm_term=tanning+in+wine
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e875a851ef7455b85633af/1625847208143/c_interview_questions_download.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee5f3d39b82603386c41dc/1626234685285/watch_the_croods_a_new_age_full_movie_free.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c137d8d5997ba4e5930e/1625866551122/nugafevipuzedetilo.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f031b034da7a51e3f663ad/1626354096790/time_and_a_half_pay.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f3b8edb386920ff6d0fab8/1626585325824/fojez.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f2c759a047b636121e2538/1626523481894/ding_dong_ding_ding_ding_dong.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f198b8b78d806d135f1cbf/1626446008629/76738924914.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee4e6c6d75c50a5d44f562/1626230380763/33069381746.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f55b5ca8f65e35b6f0a58a/1626692445127/abercrombie_and_fitch_employee_handbook.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e90a965fa2eb14b90ac6d0/1625885334434/binding_of_isaac_online_unblocked.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f327aa2be78d5265993ba0/1626548138465/common_multiples_of_2_4_and_6.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8481a9e539748b11980d3/1625835546167/nekored.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed9712c5e0b1320e33e339/1626183442447/kufafekukuki.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e81c7138ed220952b04133/1625824369253/spirit_break_out_william_mcdowell_chords.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec834e668ba31612b6065e/1626112847046/wsdl_to_java_example.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f6f5ae7790a54bac7da352/1626797486359/social_10th_class_textbook_download.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f45cf2ec5ad00cc09a22df/1626627314972/going_home_for_tet.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8709cb3fed63d024e1985/1625845917102/12562361128.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec942d11a746407a42b33b/1626117165745/pagotasugikiruwim.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f874b1c2de402a3e5541e1/1626895537331/how_many_electrons_does_li_have.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee33a68e3fff2bd3bfd1e4/1626223526967/picture_of_condensation_in_the_water_cycle.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecabc605183b3b57a153d9/1626123206352/wupev.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8170ad4a1a22a3e72eeb/1626112369263/impact_factor_journal_of_physical_chemistry_b.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f6c34f1f75e014b6e0e3eb/1626784591523/48798050874.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_off0000edd4.bin
d978cf2b820eac27f315dac2f375cb52db9048e95354e16769a275697c2e9765
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD4 9800 bytes
font_01_sfnt_off00010378.bin
5bf0d9b0e1aa463d46c667000eb7910632527cba98c9f6f55f76db620c54f75a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10378 16836 bytes
font_02_sfnt_off00012f20.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12F20 16792 bytes