Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d84e3e3a75a80f…

MALICIOUS

PDF

80.8 KB Created: 2021-07-13 17:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 910a92427973bce1646c494060f46a0a SHA-1: 533b3702fa38f2a0050be152750bf9997e59df8f SHA-256: 18d84e3e3a75a80fb56449afe52498c2c3dd6127756a89f0b385009e3f48ef3f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate this PDF is malicious, specifically identified as a phishing trojan. The presence of embedded URLs, although marked as benign in this instance, suggests an attempt to redirect users. The wkhtmltopdf authoring application and the nature of the heuristics point towards a phishing lure, likely attempting to trick users into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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/NsX9ihectO0/square?utm_term=the+king+of+fighters+wing+3
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec77f740121f566898d008/1626109943632/zalabozetediseledemil.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60eca8d4934d360eb28bef58/1626122452970/best_place_to_keep_money_short_term.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8521f21192c658745c6bc/1625838111174/44753199572.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e94843db8bb141bada7f5f/1625901124022/another_word_for_intellectual.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec93f2e7718717d763632a/1626117107020/g_codes_in_cnc_programming.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e90ebf2210ba6bce116b24/1625886399262/sudagatepojorada.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed98d9573bc4731c891392/1626183897305/defukasejuradode.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9007f8ce0e10532d17312/1625882752075/light_headed_sick_to_stomach.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8dc91951226b8b8b6389/1626115529418/fast_and_furious_6_full_movie_in_tamil_watch_online.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8aeda51c23d46c465fe2e/1625861850418/73499579580.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8d503aa915d5f299c5a69/1625871619670/potato_leek_soup_with_bacon_and_cheese.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e771f1e290d55a2979b629/1625780722001/complementary_and_supplementary_angles_worksheet_with_answers.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed9e87c8cbd011b90bee2c/1626185351937/39025444246.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed8ceda17c7f1bf00557a8/1626180845244/movie_pub_quiz_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8ef163ba7d954d543d576/1625878294512/puferakitalukodajawifesa.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_off0000d06f.bin
0bab0d29d100e82ae9cb2c274293c07095a5107fe570c0765e9fd147c40db132		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD06F 18204 bytes
font_01_sfnt_off0000fdb8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB8 16792 bytes
font_02_sfnt_off000115c5.bin
3e54697433f258519e59b5d4193970bd3702f67e639bb31f2dfcde737eb7fc9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115C5 1728 bytes
font_03_sfnt_off00011df3.bin
823dfc933edc21a8e4f08ba57e56760667b70308ce60cff8a61984e11aa1f072		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF3 10600 bytes

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