Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d3ab5c6396ba42…

MALICIOUS

PDF

103.4 KB Created: 2021-07-23 07:02:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ffcb56c614b5fa248bcf1be1f1669955 SHA-1: 8c0455fb2d7855fff2fb2f3ab7b30ebdec631540 SHA-256: 29d3ab5c6396ba421d6deb1e673afd9cea43678ea6336c8267694dbf6c6e9b82
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests the document may be used for phishing or to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF format often utilizes JavaScript for malicious actions, hence the inclusion of T1059.007.

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/gPkW7oTCsL0/square?utm_term=2018+icas+english+answers
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0e3f1db86a67d857efd5b/1626399729959/zovawumilodamesup.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60fa3824223b61174df24c02/1627011108161/xixelesog.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec78ddc8b0d544b6d6907f/1626110173587/in_every_case_meaning.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edf73cf6d8087912c12399/1626208061009/loz_tp_water_temple.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0a1b45d0204096d9d51c4/1626382772048/ballys_sports_network_streaming.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f122a80a71fd0da9ad6453/1626415784824/flat_face_persian_kittens_for_sale.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f4a5368a396f1703ad65e3/1626645814892/how_to_know_if_inpods_12_case_is_fully_charged.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f1d63ccb54f1284900db14/1626461757158/lady_and_the_tramp_123movie.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f1e20795e79610f6df98af/1626464776212/pudutegirotifivez.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e9421df492d21a0f6be102/1625899549750/end_of_term_report_for_preschoolers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60eca0247a6a1626764b43b1/1626120228711/how_to_get_an_owners_manual_for_a_car.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f9f4ba6f9cc677e9350b74/1626993850431/percentage_practice_test_with_answers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e81dc7b977dd1475ccad73/1625824711805/example_of_klinefelter_syndrome.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1a925675fb4239db0367f/1626450213463/online_piano_with_octave_numbers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee202b84a0477e84a95673/1626218539403/sepefapazasibidupe.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f43f2b9ee5897bffab2a71/1626619691394/69574848561.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e92ead3b7e7c633450b37c/1625894574051/space_mutual_funds.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60fa35f8a0113022b24b0e85/1627010552634/apa_format_appendix_before_or_after_references.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee1d6f02e0767984f12db1/1626217840178/easy_danganronpa_characters_to_cosplay.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f18d90434dd02330293204/1626443153089/26877982209.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee5d3784a0477e84ad5bd0/1626234167120/square_root_of_18_simplified_radical_form.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_off00012f2f.bin
31f8732de65b5bc4108549ae820550fc9bd5bc5b526ae0f2e2e0ad105dd555b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F2F 10780 bytes
font_01_sfnt_off0001481b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1481B 16792 bytes
font_02_sfnt_off0001602d.bin
b4f96d382c2c5cec627458b7009656709d6686cb2a6fa19dbfc949a9f8d54a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1602D 18500 bytes

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