Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eef5efb8f363002…

MALICIOUS

PDF

87.2 KB Created: 2021-07-22 00:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dfe834bd3f953af9820bd352f0ee5a09 SHA-1: c4bb41c70634f3ae327056d120a39cda312fcf91 SHA-256: 9eef5efb8f363002498ef64f656c2be46d28452730abdee22e31cc3039f3b4de
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL, 'https://oniceh.ru/square?utm_term=seah+holdings+corp', which is likely used for phishing or to download a secondary payload. The authoring application 'wkhtmltopdf' is sometimes used to generate malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://oniceh.ru/square?utm_term=seah+holdings+corp
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f844c471f2bc76962c3a5b/1626883268299/bibul.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f88c12296f834dc9c2f2a7/1626901522793/how_to_access_autorecover_in_word.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f5963258f9af1d5c42d76f/1626707506797/linguistic_intelligence_activities.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edf2b2a9aa746350ce2055/1626206898749/86596290273.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f34d1b503a2167179164c1/1626557723409/10_cups_of_water_in_liters.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f171eaf9088a713e6d20f2/1626436075017/xababen.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f35aaa1db272198f97e9d9/1626561194930/how_many_calories_in_champagne_glass.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f2595f699a8678c57102a4/1626495327755/timojegipilemepodulepu.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed3ba0840a1961e7b47bfa/1626160032632/zixepebatavasusi.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f62cd753b2da2db762e95d/1626746072051/52485406175.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e95bf96e267257943c9414/1625906169343/75369098684.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f88c495ad3337a4c479e7e/1626901577208/iit_jee_study_plan_for_droppers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f5a80c50436907460a2864/1626712076557/fragments_comma_splices_and_fused_sentences.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f03253161c0660543a8f76/1626354259799/underwater_drawing_realistic.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e76ec5441d4a28897ef65c/1625779909767/3d_chess_rules.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edb6d87daf0c15b06bca27/1626191576630/99714127906.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_off0000ef49.bin
453497cc73021c46c22d4cc401cf73f842acfecd72ae521e8fe3c2841e8368d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF49 17380 bytes
font_01_sfnt_off00011cf5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF5 16792 bytes
font_02_sfnt_off0001350c.bin
b8e192364a2c9928d2a56679022e69ca212a1ea7ee716024d5b8cb5d5028ca48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1350C 10772 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.