Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec3145437d8f6b5…

MALICIOUS

PDF

75.8 KB Created: 2021-02-28 15:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6717f18fede584d61805286c641c1ef SHA-1: 216f9780c4f9595272d58db892810dcda5880746 SHA-256: 4ec3145437d8f6b51d03dc808c655f5c4fcddd8effde1a7fec4d5219a7a4c3c2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a product manual, likely to trick users into visiting a malicious site. ClamAV and ML classifiers strongly indicate malicious intent, and the presence of multiple external URLs further supports this. No scripts were extracted, but the overall structure and embedded URLs point to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/wix?keyword=lights+of+america+8045+manual
    • https://jebasiju.weebly.com/uploads/1/3/1/3/131381450/6774156.pdf
    • http://zalofamanaw.22web.org/batman_arkham_asylum_game_guide.pdf
    • https://cdn-cms.f-static.net/uploads/4413002/normal_6009b6e383d1f.pdf
    • https://wilibupa.weebly.com/uploads/1/3/2/6/132681560/8445401.pdf
    • http://kewavixim.22web.org/spread_3rd_verb_form.pdf
    • https://static.s123-cdn-static.com/uploads/4456132/normal_5fe3810bc3fdd.pdf
    • http://remontnatali.ru/a_breath_of_snow_and_ashes_hardcoverxqom0.pdf
    • https://static.s123-cdn-static.com/uploads/4422643/normal_5fed1ca2cd615.pdf
    • http://sfr-webmail.com/how_much_is_a_bush_and_gerts_piano_worthgq9od.pdf
    • https://nedotumawu.weebly.com/uploads/1/3/4/6/134626041/rinevotuteno.pdf
    • https://rorezumi.weebly.com/uploads/1/3/4/5/134591247/3109149.pdf
    • https://static.s123-cdn-static.com/uploads/4403276/normal_5fcfe6b5ae102.pdf
    • https://lunogowome.weebly.com/uploads/1/3/4/8/134859941/bopisuten.pdf
    • http://clyb-wylcan3.space/lawn_boy_10323_for_saleqnep8.pdf
    • http://gonzo-3d.com/the_ellipsis_marki4nce.pdf
    • https://static.s123-cdn-static.com/uploads/4416659/normal_600295dab3b46.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ziwezamo.epizy.com/kraken_g10_installation_guide.pdf
    • http://lumaradidufil.epizy.com/dynasonics_badger_meter_manual.pdf
    • http://wuwovedivaz.rf.gd/80249774907.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e846.bin
36ec4c2fd00f77d5445310f1dac98fb492842528b7b58fcd91b8db7869525c73
pdf-font-stream PDF embedded font (sfnt) at offset 0xE846 5784 bytes
font_01_sfnt_off0000fbdc.bin
6f33d8563a9e7ad0e78b7e751dc6a9b9be69cd303e597001eb343a6bc6c91a84
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDC 11312 bytes