Malicious PDF — malware analysis report

Static analysis result for SHA-256 a54091dff1166d74…

MALICIOUS

PDF

79.2 KB Created: 2021-02-20 15:26:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dca8eaf76edf8c9e4d5a59a559c52e2d SHA-1: 4725af925f75640302175f87bb7ba07b7d7a3278 SHA-256: a54091dff1166d74811f2d40b0617b34b8db4975135a6afefbe580e7d86a65eb
136 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. Heuristics indicate it contains an external URI and an advance-fee scam lure. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest it is designed to redirect the user to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://leonvi.ru/wix?keyword=animal+farm+study+guide+questions+answer+key
    • https://cdn-cms.f-static.net/uploads/4449766/normal_60220cd3a12e7.pdf
    • https://cdn.sqhk.co/kunimoxifagi/igjY5y3/kekaman.pdf
    • https://cdn-cms.f-static.net/uploads/4379487/normal_6011cd5c1dff3.pdf
    • https://cdn.sqhk.co/mezutorixo/gjhihhc/galaxy_on_fire_2_ships_best.pdf
    • https://cdn-cms.f-static.net/uploads/4366359/normal_6010b62a63a79.pdf
    • http://gromstroy.com/brother_printer_dcp7065dn_manualdyoed.pdf
    • http://fragcups.com/template_roadmap_powerpoint_freeqiqd3.pdf
    • https://cdn.sqhk.co/lilanoto/eibrhdA/buxakizuzelatuwevo.pdf
    • http://xuruwerufasafer.22web.org/xikoras.pdf
    • http://hotita.fun/28637340812ba21z.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pobediwawe.epizy.com/71532952905.pdf
    • https://s3.amazonaws.com/xebuvuwov/2016_bmw_x3_xdrive28d_manual.pdf
    • http://lazunebenak.epizy.com/66168695710.pdf
    • https://s3.amazonaws.com/dixaleko/dajuwejepojip.pdf
    • http://rovalonawu.epizy.com/side_by_side_ed_welch_review.pdf
    • https://s3.amazonaws.com/tugafebip/kadaronizukusetawo.pdf
    • https://s3.amazonaws.com/tupofelasujewas/css_vertical_center_without_transform.pdf
    • https://s3.amazonaws.com/mejados/97344148327.pdf
    • http://nopizapokife.epizy.com/jokoboxuboxadigarijuva.pdf
    • https://s3.amazonaws.com/gomakobez/26344977651.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e94c.bin
a606a6dede3b99472d2ac97761204782646b5f75106b48d1abccbe9a99ca9a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE94C 6440 bytes
font_01_sfnt_off0000f940.bin
7d0d1403f4dcd089cb7aee6b74b012d4b47d8df6cdfcd1a1011fd6801d63dcbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF940 5600 bytes
font_02_sfnt_off00010c44.bin
a3fc72a20766047dac5a516d415860dc60ece576ef89834897640ecae33a4f7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C44 10184 bytes

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