Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e8143ec0208321…

MALICIOUS

PDF

71.2 KB Created: 2021-05-21 19:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b794b88fce26235179cf0f1b102e89e SHA-1: 70d34d3f69da3e02beb55daf77bd85753390e08a SHA-256: 06e8143ec02083214ce6558def59db2c1ad1cde762203ac886a1a523cf959b9f
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall context points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://static.s123-cdn-static.com/uploads/4411220/normal_5fe279bc70239.pdf
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/powufaretokugaw-zuduxideg.pdf
    • https://cdn-cms.f-static.net/uploads/4382773/normal_6023d90aeaae2.pdf
    • https://static.s123-cdn-static.com/uploads/4461525/normal_5fdfa86b2becc.pdf
    • https://zofoneparadi.weebly.com/uploads/1/3/5/3/135341866/0980ca13.pdf
    • https://static.s123-cdn-static.com/uploads/4404955/normal_6005279aa35fa.pdf
    • https://cdn-cms.f-static.net/uploads/4452382/normal_603c53ffcc41c.pdf
    • https://cdn-cms.f-static.net/uploads/4410206/normal_5fdc1f90951f6.pdf
    • https://static.s123-cdn-static.com/uploads/4480886/normal_5fecc5e6e7245.pdf
    • https://bimefitovaj.weebly.com/uploads/1/3/1/4/131437299/2285365.pdf
    • https://cdn-cms.f-static.net/uploads/4501656/normal_606bfe0c6e5e2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://feedproxy.google.com/~r/wb/ENAH/~3/G1IkLG9TFNM/wb?keyword=stack%20on%20gun%20safe%20door%20organizer
    • https://s3.amazonaws.com/bulozor/good_pedometer_app_for_android.pdf
    • https://s3.amazonaws.com/rozebofukixus/betterwmf_v4._02.pdf
    • https://uploads.strikinglycdn.com/files/4d9c4013-dd28-49b1-a62e-70f843a23b3c/58451526733.pdf
    • https://uploads.strikinglycdn.com/files/22c9e89a-70ef-4222-996f-a444452e0679/ariens_path_pro_carburetor.pdf
    • https://uploads.strikinglycdn.com/files/deb0f8aa-3c71-4f4c-80f4-7c4d1d764cbf/gospel_of_thomas_summary.pdf
    • https://uploads.strikinglycdn.com/files/052cb8d4-5013-48ca-9b2a-062a1a8d7886/definicion_de_filosofia_del_derecho_segun_autores.pdf
    • https://s3.amazonaws.com/savukojubusum/axial_wraith_1.9_1_10th_scale_electric_4wd_rtr.pdf
    • https://uploads.strikinglycdn.com/files/eb9b759a-d8df-4b5f-9f4b-e51af6905aeb/95699618619.pdf
    • https://s3.amazonaws.com/leteraxewe/lapuselidevokofunaduwova.pdf
    • https://uploads.strikinglycdn.com/files/bdbf0d13-5e7e-4f30-a3ed-4ac72d2d919f/misspent_youth_band_nottingham.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_off0000d699.bin
570f4681b45cef0b535e62b272bfb3ff1d2de554a1e720b6592afe77467640d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD699 5372 bytes
font_01_sfnt_off0000e8fa.bin
f7c5ded07036d30b8525b9e32d7ec55ded3b86f362e0384b60defa1f5439d8ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FA 11380 bytes

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