Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ff214b9d2f8abc…

MALICIOUS

PDF

82.9 KB Created: 2021-03-29 14:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8d2bc8125e72d6d93414a0a601dee638 SHA-1: 681fcbd2b30d028e710b45ff03fdb2b92560ff88 SHA-256: d9ff214b9d2f8abcb2801fd8f4fa1f3fbb457e7f0762898e93edd4d24b529062
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a lure related to downloading content, likely to facilitate further malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/award?keyword=astronomy+today+pdf+download PDF link annotation
    • http://toportt.online/itil_v3_service_strategyr92ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464877/normal_5fe38d5401bf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403531/normal_6002b4e095f64.pdfIn PDF document text
    • http://ersoil.fun/how_to_read_dua_e_istikhara55s5w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446170/normal_60283937defe3.pdfIn PDF document text
    • http://afracheat6.xyz/why_is_my_dog_so_thirsty_lately5fium.pdfIn PDF document text
    • http://forexgeeks.net/540075461752tiio.pdfIn PDF document text
    • http://dreamingdeveloper.com/harry_potter_5th_book_release_dateyei9m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387428/normal_602fc04788376.pdfIn PDF document text
    • http://winoorama.site/wujusadifopefdq3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486053/normal_5fcaece548edf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413846/normal_5fd9ca09a4c2c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411708/normal_5ffc593644189.pdfIn PDF document text
    • http://tegor.xyz/bombsquad_mod_apk_1._4._149nyzho.pdfIn PDF document text
    • http://getyourscore.info/xuwejipotidae9xbb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481406/normal_5fdf325f93ed8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a001dc82-f31e-4944-9b76-0a8e602b6855.filesusr.com/ugd/e4ee87_1ee61da29bc449ee91abd3bd8c6233a1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d055b2a9-1ada-4950-ae5d-c64996d8afd4/pioneer_mosfet_50wx4_car_stereo_wiring_diagram.pdfIn PDF document text
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_d3fbbbdacddb4bd698f5c7e0ee22f119.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ca57df2-1fba-4106-a9b0-b135679d61c2/denon_avr_1513.pdfIn PDF document text
    • https://9de673a2-3b8e-40eb-bbf5-c0ad8e71a3da.filesusr.com/ugd/bd5c68_0c00db8707b740bcbfec5d993dade0ba.pdf?index=trueIn PDF document text
    • https://38aad9b5-7a72-45b8-ac81-9fe73ce82000.filesusr.com/ugd/08338c_1e6de1871938434e873a8e699c2983ef.pdf?index=trueIn PDF document text
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_4c20a7d5182043efbe56faed74facfbc.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E9 5372 bytes
SHA-256: 323822adbd0b55fd3f36894f27ec55156615683919cde87d694650838a8ecbea
font_01_sfnt_off0001192f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1192F 10884 bytes
SHA-256: 3649f5a4a151760bc1c22b4a35b1732ed105744d636c7a60067af134c9e08e60

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