Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0cf686427b08d12…

MALICIOUS

PDF

91.4 KB Created: 2021-03-27 19:08:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ff9f0acf61fa8f5ea302dcbef40197a SHA-1: e91a2b00cf5259a2d371827fa3ef2b10a229c587 SHA-256: a0cf686427b08d1226e7fff8f1f5af687234a02176771e2e9692a9ffab483b08
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this assessment. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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=badger+airbrush+compressor
    • https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/nuxit.pdf
    • http://kindraretterath.com/scratch_3._0_lessons8avjt.pdf
    • https://vagibize.weebly.com/uploads/1/3/4/6/134618654/57dd3759cc.pdf
    • http://topuniversityru.fun/frostpunk_refugees_hard_guideu4xk0.pdf
    • https://jikurufor.weebly.com/uploads/1/3/4/6/134613562/masoju_keteviweg_renufebivabusej_dunepubukavaj.pdf
    • http://zijozarub.mygamesonline.org/anabolism_of_carbohydrates.pdf
    • http://sethel.xyz/91633173890wj4i1.pdf
    • http://begetus11ppz.xyz/campo_rosero_biografia_de_leonardoz7ktj.pdf
    • https://rajuwirorevub.weebly.com/uploads/1/3/5/3/135306937/muvusomasoda.pdf
    • http://gizigevom.mygamesonline.org/lenovo_g50-45_drivers_win7_32bit.pdf
    • http://warewakeb.sportsontheweb.net/81340820502.pdf
    • https://fafexozoruxefok.weebly.com/uploads/1/3/4/5/134527426/f7a13.pdf
    • http://dompodklyuch.com/cyberghost_6_crack_free_apklx4s9.pdf
    • https://bulugigedi.weebly.com/uploads/1/3/4/7/134714886/433d468f.pdf
    • https://tariroviwobin.weebly.com/uploads/1/3/4/7/134715354/zijuva.pdf
    • http://tapidiv.medianewsonline.com/do_i_need_to_play_bravely_default_before_bravely_default_2.pdf
    • https://dexasarejujevi.weebly.com/uploads/1/3/1/4/131454537/sufatefenum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/901b7272-fe18-43da-bc51-d15d6185d2af/20224286098.pdf
    • https://s3.amazonaws.com/libeganot/nobenuvalanubegemavovowe.pdf
    • https://s3.amazonaws.com/sukedil/40934407690.pdf
    • http://guwaxilajoxeza.onlinewebshop.net/nigepatupix.pdf
    • https://uploads.strikinglycdn.com/files/e7b3c8bc-dee2-465f-bb7b-b28b2fd218ca/42720306772.pdf
    • https://s3.amazonaws.com/belopudevuzuza/dowdupont_annual_report_2019.pdf
    • https://s3.amazonaws.com/remeranexe/1984_part_2_chapter_3_discussion_questions.pdf
    • https://uploads.strikinglycdn.com/files/6068295e-5d70-41d3-bd78-9e9c4e336aae/89824141338.pdf
    • https://s3.amazonaws.com/jeworurowam/72780296647.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011666.bin
ea3947e9cb13dfe348db9c8c8193bcae44e33d04999ce2b6c30bc28376ec7c0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11666 5340 bytes
font_01_sfnt_off00012885.bin
8a4fb7dafae185dd4744c480dae7c9af77d7058aea69d38f31439bd10f90ea31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12885 11816 bytes
font_02_sfnt_off00015093.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15093 4324 bytes

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