Malicious PDF — malware analysis report

Static analysis result for SHA-256 141666397a1bb5fa…

MALICIOUS

PDF

84.3 KB Created: 2021-07-22 01:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 233c15085a63eada31c0c84fdf3e2734 SHA-1: e108dd7a6271488948cd2e8c132b7641ca255797 SHA-256: 141666397a1bb5fa8c2ed584831e361e8248e4b66b004c1aa8fb7950adf9f057
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains embedded URLs that likely lead to phishing or malware download sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting malicious content, aligning with phishing and malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/razvivatel/yapz/~3/-MXWpcYQ7kA/square?utm_term=things+to+draw+with+oil+pastels+for+beginners
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f24566c5d9e6782cd6a4cb/1626490214433/modal_verbs_french.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f832f6503e0e282bf71e48/1626878710302/powerpoint_file_history.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edb32254e5b71ae850540a/1626190626164/dujifewixamabimo.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f28668ebca9b5ae8e360a3/1626506856465/satuzexeli.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f612496ad4e844da922d91/1626739273416/application_for_experience_certificate.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f730edf507002a95e1e662/1626812653943/corresponding_with_you.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee39f27c5bce1f334cb42c/1626225138895/an_introduction_to_statistical_modeling_of_extreme_values.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0e4ba3710375a26a4173c/1626399931006/how_to_adjust_size_for_printing.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f68afb3fb69e7128f85fd0/1626770171936/jobonivovafibosidatepodo.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e929fc37cb904475604a87/1625893372695/coping_strategy_scale.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f548f18a396f1703b59f7d/1626687729340/73774852704.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4961c25edf123066828bd/1626641948314/css_to_min_css.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f89729d214234a65e300e7/1626904362240/jolevusaso.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f5890c1434f635473efe36/1626704140334/ladalexenoduvixenal.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f629ee80a0646c000521ea/1626745326673/medical_certificate_absence_from_work.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8f992f492d21a0f6934e8/1625880978944/gipagevuta.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92639854c1d3b3487241c/1625892409474/wobodurasepi.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f7598f33be4423c5770646/1626823055647/resorptive_lesions_in_cats.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7fc0cd93aeb546a15c689/1625816077112/rubrics_for_painting.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edecdc670c344ea75ea0de/1626205404252/newodepamikaru.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f6b7c4f8b2bb71005d7af7/1626781636881/cookery_and_cutlery.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_off0000e7ae.bin
c67ecc9da66cbd958b0775ac5f91ed7e655bd7acb20e40ba5a1586627d4955d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AE 16512 bytes
font_01_sfnt_off00011248.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11248 16792 bytes
font_02_sfnt_off00012a5f.bin
0348eb7f5ce5551f0fda525cadeabe41ff58d16dea1b9737ade3d96d4af1be08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A5F 10964 bytes

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