Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c7fd1474ab8220…

MALICIOUS

PDF

84.8 KB Created: 2021-07-18 12:23:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: aeac6635885d5c0b9b46dccee9781fe7 SHA-1: 005d2c55f5bbf12d3beb2508fbecffc7554bc554 SHA-256: 24c7fd1474ab82208c50571abc2efa233cf3c7239dc47dcd512c7a175bc15620
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL that, while currently flagged as benign, is indicative of a phishing or malware distribution attempt. The PDF structure and embedded artifacts suggest it's designed to appear as a normal document but likely contains malicious links or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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/pL_UGxDroB4/square?utm_term=hot+female+workout
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f01035d777570416546478/1626345525362/22969986265.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e9337237da2614570ed94b/1625895794652/different_kinds_of_fries.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee641b6bb0602df213ef34/1626235931237/lord_of_the_rings_part_1_book.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed0600cdb2ce13c521b7ef/1626146304457/commercial_diving_certification.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee7bfce03b615e09919e3a/1626242044323/36456198042.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7c1c05eabb22f35d96b88/1625801152912/40711915548.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f3cf489ee5897bffa75b64/1626591048706/32275810724.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee63257c5bce1f334f6d86/1626235685399/varemetewepepigewegudovod.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f085ae02a22d3aacf75214/1626375598854/vision_ias_test_series_free_download_2020.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0d3a29627e70a9ac9ddb1/1626395554254/baptism_of_water_and_spirit.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f37425a9adb72803a88298/1626567717534/modern_concept_of_sustainable_development_focuses_more_on_mcq.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_off0000eab7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB7 16792 bytes
font_01_sfnt_off000102c9.bin
1f083e242c2585e1ed132f04f55f0b9bfd5ad4230c7ae7d5082a24be103a4577
pdf-font-stream PDF embedded font (sfnt) at offset 0x102C9 17312 bytes
font_02_sfnt_off00013028.bin
8ec29aed2d7a4fd308a64a591d6a6ac4a5627fe72f6d9bd43f2df8d4cb814531
pdf-font-stream PDF embedded font (sfnt) at offset 0x13028 10280 bytes