Malicious PDF — malware analysis report

Static analysis result for SHA-256 b006ae98244dca57…

MALICIOUS

PDF

97.8 KB Created: 2021-07-18 09:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 205a38950205e447c51c0604740484e0 SHA-1: 73e473dbf3bbe7ee808c692cdaa04a19a608b0d6 SHA-256: b006ae98244dca5713c41a7fbbf9c15f8b3e303ec484bebb808c766e108ac383
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, although many are marked as benign, suggests an attempt to lure the user to external resources. The file's structure and heuristic firings point towards a phishing or exploit 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/sq/ugae/~3/HbdJGeoIq_s/square?utm_term=add+border+to+paragraph+in+word
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f39e98d9389f5e809162fd/1626578584965/77048818928.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8463cf87ec6517a5a0027/1625835068494/what_your_favorite_color_says_about_your_personality.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec9a3336ee212f66d08d68/1626118707134/lejusikilebuliwage.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecef63f84adf285bec3a40/1626140515518/sokakati.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edcde5ac614e13d12e1ba6/1626197477402/nujuxuxijekoxebewa.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edaf5af53e3457ef885a6d/1626189658686/ester_dean_and_usher.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f38c06ec5ad00cc092d581/1626573830764/not_an_alcoholic_but_a_binge_drinker.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8b54543ad423552e678a2/1625863493959/wowijizativivuke.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f2ca85860d895b4820e5eb/1626524293706/how_many_ounces_per_gallon_for_50_to_1_ratio.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92bc92f3c4128e18aaf11/1625893833091/how_to_remove_mugshot_from_internet.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f1a1341c55516a1840ca86/1626448180180/bokedegesapope.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eca1a345711547b6a933c5/1626120611463/wikikaju.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec9c6de0914637f38d4718/1626119277441/fatolojaputuvoneki.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_off00011da6.bin
f80c840a404e11593306ae6af0c5a9e189b2eadf22a25f3156b1ef806cfa3146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA6 17224 bytes
font_01_sfnt_off00014afe.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AFE 16792 bytes
font_02_sfnt_off00016315.bin
03981f39a10c5b22e0c9f3acda9dedf8a5ea45b61864b1d16d2d83748b30314b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16315 10664 bytes

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