Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d5495be743c669…

MALICIOUS

PDF

99.0 KB Created: 2021-04-03 05:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0161e5d7ee80c02e0994b0907a817bba SHA-1: 2eb7745798d22e309e9b304039bd9dda9d3fd134 SHA-256: 75d5495be743c6698b2b6ca71b4e1af7bc67ec1ceb99adbaea58adfdda8c5776
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics and ClamAV as malicious. The document body, though partially corrupted, suggests a lure related to a 'guide'. The presence of an external URI and the ML classifier's high confidence indicate a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://golowaki.ru/123?utm_term=liftarens+guide+till+galaxen+svensk+radioteater
    • https://cdn-cms.f-static.net/uploads/4460045/normal_5fea441ed38ef.pdf
    • http://organicnu.info/snl_bird_family4oss6.pdf
    • https://cdn-cms.f-static.net/uploads/4469104/normal_5fe91bfc6a93c.pdf
    • https://cdn-cms.f-static.net/uploads/4411500/normal_60559f0131622.pdf
    • http://lusolakidareve.mywebcommunity.org/focus_on_physical_science_download.pdf
    • http://sovolox.getenjoyment.net/anderson_introduction_to_multivariate_statistical_analysis.pdf
    • http://vawabipoxe.sportsontheweb.net/28867845897.pdf
    • https://cdn-cms.f-static.net/uploads/4417122/normal_601f0b86bef67.pdf
    • http://markettop.pro/free_r_n_b_ringtonesxckxg.pdf
    • http://kuliwegi.sportsontheweb.net/set_theory_for_competitive_exam.pdf
    • https://cdn-cms.f-static.net/uploads/4388160/normal_602b7ee65d296.pdf
    • http://lnstagramcopyrighthelps.com/90948185628zxbe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/selivuvumepaveb/ultimate_ninja_blazing_reroll_guide.pdf
    • https://uploads.strikinglycdn.com/files/7a025671-ebbf-421d-a58d-a8ca4749ea49/sojumexe.pdf
    • https://uploads.strikinglycdn.com/files/12b580c8-b8e4-4b1f-9076-d20464ac3c71/caracteristicas_principales_del_modo_de_produccion_de_la_comunidad_primitiva_esclavista.pdf
    • https://s3.amazonaws.com/zarelusipofox/charlie_chaplin_2_video_songs_free.pdf
    • http://padegijogul.atwebpages.com/how_often_to_clean_jacuzzi_jets.pdf
    • https://s3.amazonaws.com/gavapozalilup/kindred_octavia_butler_chapter_summary.pdf
    • https://s3.amazonaws.com/fejififimaketo/dayton_gas_infrared_tube_heater.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105a3.bin
d0e07a075db6a187e09104ebce49a5c1c9b54dcc525298f0b44e978174c9a4b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105A3 11704 bytes
font_01_sfnt_off00012bf8.bin
25b2f804d9ce0fbdf9001fdd1d9b0b8df256698c2da28f26d72ffa07ab1ca457		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF8 5208 bytes
font_02_sfnt_off00013dcc.bin
4735e5d8800847cf062609350a9a4c1eb532f0ff3f85eeaaef4cfce28eb26d61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13DCC 12660 bytes
font_03_sfnt_off0001668e.bin
1ff76b967cdf3bc4238cb8097aa9d4755c8fb5bd66c4cf01391f6e70ad1e9315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1668E 16192 bytes

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