Malicious PDF — malware analysis report

Static analysis result for SHA-256 6374f83fef1b8d2f…

MALICIOUS

PDF

580.3 KB Created: 2021-03-21 08:50:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 03ba7c8def337a2d6913931852752482 SHA-1: 303b0bcb709a525464f6611d53c060d1578fd205 SHA-256: 6374f83fef1b8d2fbe6dd85d40352b03bed2fe475c859a58f55e306428a62512
104 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and an external URI pointing to a suspicious domain, suggesting an attempt to trick the user into downloading a payload. The ML classifier and ClamAV detection further support its malicious nature. The embedded JavaScript likely facilitates the download and execution of a second-stage malicious file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5630

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://soxebez.ru/award?keyword=alternating+current+fundamentals+8th+edition+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365591/normal_6041c0fcc4ec5.pdfIn PDF document text
    • https://tumulole.weebly.com/uploads/1/3/6/0/136054957/8469260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410216/normal_603df4d397005.pdfIn PDF document text
    • https://toripifisesu.weebly.com/uploads/1/3/4/3/134367164/getogikutegogalilapi.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/DiiAnhg/bottle_shooting_game_download_uptodown.pdfIn PDF document text
    • https://tozirodewekopax.weebly.com/uploads/1/3/1/4/131453541/riruzetevivewetefesi.pdfIn PDF document text
    • https://pekumovulimezel.weebly.com/uploads/1/3/4/3/134363026/d2656d.pdfIn PDF document text
    • https://rifuxegu.weebly.com/uploads/1/3/4/5/134525143/7136e.pdfIn PDF document text
    • https://cdn.sqhk.co/pobijejok/Yeqjjgg/posenetebud.pdfIn PDF document text
    • https://vigelabed.weebly.com/uploads/1/3/4/3/134368569/nobiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391331/normal_5ff89ba00ca44.pdfIn PDF document text
    • https://botuniditiga.weebly.com/uploads/1/3/0/9/130969051/fareg_pofagepibonuli.pdfIn PDF document text
    • https://cdn.sqhk.co/xanovika/0NYigZz/espn_nfl_scores_patriots.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d99c26cc-8c68-456d-a039-1a26994c8d26.filesusr.com/ugd/105a8c_db38dd1ff3ed4675ae14a1dee31c6108.pdf?index=trueIn PDF document text
    • https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_9e1c7db29a27452fb9fd2e803ccbd5df.pdf?index=trueIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_03a28ec4f152498db9bfb2f2c4bdf62f.pdf?index=trueIn PDF document text
    • https://34e223d5-b18a-4f89-96b3-7c58aa965d90.filesusr.com/ugd/440e29_e909c30c980c4ed39f0265e796a5c5e9.pdf?index=trueIn PDF document text
    • https://944bcc21-9f45-42c2-9889-8cf837fa5d1c.filesusr.com/ugd/50f869_5801bd5f000a46cc887fa243a878762f.pdf?index=trueIn PDF document text
    • https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_3a174a76805449c4b9327f76477f938c.pdf?index=trueIn PDF document text
    • https://ede8a7a3-2377-4e09-926a-401222b31c25.filesusr.com/ugd/81c89d_926c7aaf1b3e4767b4b6a344986d989e.pdf?index=trueIn PDF document text
    • https://87b84290-c0b3-4c73-97a1-3d59c64c3f69.filesusr.com/ugd/c638b7_ff7d5af9f68d469ea21e8f56290647d3.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0008802b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8802B 2868 bytes
SHA-256: e7aa2388688bed85150dd2f29d3a27ce720a633cd264ff1d0661bee30101debc
font_01_sfnt_off00088a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A5F 5752 bytes
SHA-256: c6e2d60d8ec74e60449c72f09eaef2258ae7eeeaf740256c5017aa1008d36dab
font_02_sfnt_off00089d8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D8A 6384 bytes
SHA-256: da42b82bfb0c8803d8d900ca5308611907f245a56fbcf50f405a51f6946e177c
font_03_sfnt_off0008ad4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD4C 1704 bytes
SHA-256: c6319c1f7aeb3c6ebcfdf552456e4b9256687512fa04d27881eb716836e4de99
font_04_sfnt_off0008b5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5EE 14904 bytes
SHA-256: 0f4ac92f7833dfd41f3bdcd7d8c7d6cb67b072f4f02d9b8dd83ed16d3e0bf26d
font_05_sfnt_off0008e803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E803 16536 bytes
SHA-256: f0df16df05a4bc53803d70c6f924c2969e047542be03be3de5327f7e25b5a7bb

Open this report in the interactive analyzer, or submit your own file for analysis.