Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5755463f13c914f…

MALICIOUS

PDF

84.3 KB Created: 2021-07-13 04:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e924cb2b8d3eaaa70698bd7c0cedc7ba SHA-1: 4e5ca96a5909b00ab867722c498c366f2561effa SHA-256: e5755463f13c914fcf25a55f7432e7a4d3b83eabb17c8a4700aeed8eda44f1f2
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of an external URI pointing to 'garglob.ru' and a heuristic indicating a visual download button suggests a phishing attempt designed to trick the user into downloading a payload. No scripts were extracted, but the overall context points to a malicious document delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://garglob.ru/square?utm_term=pdf+to+word+document+app
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8ee53080d76c7a5180c8/1626115813639/xajuf.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca8df83836e7a7d644b59/1626122464071/96124988884.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8ad4a1f8f93f64ac81b0/1626114772759/dididobowiduseximewevepu.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7a42c217102653d524cb/1626110530543/hyperbaric_oxygen_therapy_near_me.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eccae96230952f42d001ea/1626131178115/fozoxivatofamonebigari.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecd33ec4f5a641a5a52472/1626133310798/how_to_make_from_photos_in_android.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecb2c2b525121650f31905/1626124994239/faburizukavolako.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec927e83836e7a7d6207a2/1626116734423/chingy_one_call_away_mp3_download.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e869f379e5ad2408b2572f/1625844211628/paper_towns_page_count.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e94e076e267257943c3320/1625902599683/4255691247.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8fa6b92abcc18c4f44cc4/1625881195376/wejaneworutesubixejem.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92f2d2c5c2f6215c97cb2/1625894701209/41634323856.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7841c0dcbb4159dd80ebe/1625785372397/brain_parts_and_functions_worksheet.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecb9c458bd604bb8746fd6/1626126788425/quickest_way_to_cure_a_hangover.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e91c7a5ebba154a8fc29c0/1625889915019/how_to_make_someone_think_about_you_without_talking_to_them.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e95dd0db8bb141badb054e/1625906640299/judidumuzaganate.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_off0000e610.bin
83487d5ec8d0a17a881bb733c3f1b62aaf737343c83867731aa6a75960d10756		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE610 17404 bytes
font_01_sfnt_off00011426.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11426 16792 bytes
font_02_sfnt_off00012c3d.bin
8f66d997873d5b43aa73aa5a9a24a796fdaaa69530eeb5105bcb361c04a015d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C3D 10664 bytes

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