Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4003c75713ee16…

MALICIOUS

PDF

80.9 KB Created: 2021-03-16 09:48:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78050438377ad5aa1347abad791bbabc SHA-1: 7031916e0ed5e89d5a4d6e74594c78b538af83ad SHA-256: 7f4003c75713ee16b01e71fd2fd8cd792587412719a0194d8393922184664ef2
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a payload. The document body, though heavily obfuscated, suggests a lure related to an 'award'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://nipisod.ru/award?keyword=air+force+lor+rebuttal+example+pdf
    • https://static.s123-cdn-static.com/uploads/4458633/normal_5ffde087efbf3.pdf
    • http://mon-fortuneo.best/sexaninirexik7l6ct.pdf
    • https://static.s123-cdn-static.com/uploads/4476946/normal_5ff7ba9a8f6ae.pdf
    • https://cdn-cms.f-static.net/uploads/4391899/normal_6011ebbebc601.pdf
    • http://luminar4-download.xyz/masusasakqbpw9.pdf
    • https://cdn-cms.f-static.net/uploads/4452173/normal_60396709ce831.pdf
    • https://cdn-cms.f-static.net/uploads/4418791/normal_5fd60f6e45eab.pdf
    • https://cdn-cms.f-static.net/uploads/4418567/normal_5fe9c58150199.pdf
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5fef3f2d48153.pdf
    • https://static.s123-cdn-static.com/uploads/4485702/normal_5fcbc402a5434.pdf
    • https://cdn-cms.f-static.net/uploads/4451363/normal_5fdad4005f74e.pdf
    • http://psychologyrelax.xyz/personal_development_plan_template_care_workerw8x73.pdf
    • https://cdn-cms.f-static.net/uploads/4409409/normal_6041ac1f59969.pdf
    • http://lizetadolanut.iblogger.org/wuzuniwefojipedaded.pdf
    • https://static.s123-cdn-static.com/uploads/4449397/normal_5fcfb057514bd.pdf
    • https://static.s123-cdn-static.com/uploads/4384484/normal_6005f6b042781.pdf
    • https://static.s123-cdn-static.com/uploads/4448347/normal_5fee98073231d.pdf
    • https://cdn-cms.f-static.net/uploads/4468540/normal_600a4e712df1e.pdf
    • http://zoneeuro.pro/esen_yaynlar_matemat9h84p.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/petuzutemixuvod/wedding_budget_spreadsheet_template_excel.pdf
    • http://miloritamuve.rf.gd/35734866003.pdf
    • http://bomiboduju.epizy.com/dugurorakulesol.pdf
    • http://sunemixawuvija.epizy.com/a_nightmare_on_elm_street_2018.pdf
    • https://s3.amazonaws.com/tejuvonixag/what_to_do_after_catfish_maw_links_awakening.pdf
    • https://s3.amazonaws.com/zaxefemebidaz/49901732231.pdf
    • http://gafigozigu.epizy.com/notepad_6._9._2.pdf
    • https://s3.amazonaws.com/tofizo/new_odia_movie_video_song.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_off0000ff6c.bin
b95b8ff68b656dfe81a5ea0468d6ffb397fb582f49f061e962c04165f0b42ae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6C 5320 bytes
font_01_sfnt_off00011177.bin
b5a1f61b1faf0b8192c578e47f69b08c097ac3c243641d57e2ccfca8c732ac34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11177 10724 bytes

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