Malicious PDF — malware analysis report

Static analysis result for SHA-256 45cb9841c0cf2c38…

MALICIOUS

PDF

95.4 KB Created: 2021-07-16 01:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ffdfb2b31f546ffdc2a1d1ac0c9efb74 SHA-1: e193eaf404ed9ab3eca82d98ba9a1f4fbbc635f1 SHA-256: 45cb9841c0cf2c388b557e575ada9c64226d660947942857b2ea7152c365a8c9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. The presence of embedded URLs suggests a phishing attempt or a lure to download a secondary payload. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely related to T1566.001 (Spearphishing Attachment) and potentially T1059.007 (JavaScript) if active content was present but not detailed.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/iYdez4bKglI/square?utm_term=larynx+pain+to+touch PDF link annotation
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec76fbad1bf7105cca91ac/1626109691369/supitemutono.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7cf829bae382bbabef2b2/1625804674303/how_to_make_an_equation_with_infinite_solutions.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8951f91a9976fca498be6/1625855263838/some_basic_concepts_of_chemistry_class_11_questions_and_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e901208ce0e10532d17af8/1625882912428/jofilej.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0ab9156ca1161858ab873/1626385297679/5.7_cubic_inches.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f08f08f33a8b524bb0ab42/1626377992469/lakenuriri.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0b46ed1fa142bcea96e61/1626387566831/99083685512.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0b1b6a57b467a22897f9c/1626386871215/xesenad.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60eda9f0e0c6fb606614f794/1626188273080/best_answer_to_what_is_your_expected_salary.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee06af017ec663b540c87a/1626212015307/dictionary_of_diseases.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60efe6b5c00d13116b432bf8/1626334901222/63015862606.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec993f83836e7a7d62bb6b/1626118463941/would_you_just_lay_here_lyrics.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7c5d7d0799e4214bf9489/1625802202346/god_of_war_zip_file_for_ppsspp.pdfIn PDF document text
    • https://medlineplus.gov/pain.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11574 10396 bytes
SHA-256: ba1576cf224f4211f59ad1c000c7184fcb6bb39108e40a138b4d41d023d6a869
font_01_sfnt_off00012cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CF5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14507 17120 bytes
SHA-256: 9f95676271029a4a45d3e1984e47efb8af6debb0b85c128dd472fd5d19a31248

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