Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8fc5cbd0eb6df93…

MALICIOUS

PDF

80.9 KB Created: 2021-01-20 20:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d875528b236a653d2464c641c68b3b18 SHA-1: 5688e5c66e563c074f585404d68cfa2cd76c28fc SHA-256: b8fc5cbd0eb6df93c30832d782c0fdbd0a4c8e5bb04341690ae5e8b8ea0cbffa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'Six flags senior night 2020' and an external URI pointing to 'traffine.ru', suggesting a phishing or social engineering lure. The presence of embedded URLs and the overall detection by security tools strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/123?utm_term=six+flags+senior+night+2020 PDF link annotation
    • https://cdn.sqhk.co/bulunazi/iEhfiaE/kanye_west_only_one_audio_download.pdfIn PDF document text
    • https://judozonax.weebly.com/uploads/1/3/1/4/131454501/bawif-nelepijukatake-tivokexipugum-kopakukijip.pdfIn PDF document text
    • https://pejadalat.weebly.com/uploads/1/3/0/7/130775017/5ba6929.pdfIn PDF document text
    • https://site-1205711.mozfiles.com/files/1205711/bajrangi_bhaijaan_movie_all_songs_pagalworld__com.pdfIn PDF document text
    • https://site-1174993.mozfiles.com/files/1174993/chess_checkers_set_amazon.pdfIn PDF document text
    • https://site-1172728.mozfiles.com/files/1172728/communism_flag_meaning.pdfIn PDF document text
    • http://lixixivukagoda.66ghz.com/farajevegiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489992/normal_5fee4692bb807.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/ijtjb1c/klondike_adventures_unlimited_energy_2019.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/worege_novepifi_wewibi_safugovikob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425909/normal_5f9d9d80045de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385012/normal_5f996492b1521.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/70737291994.pdfIn PDF document text
    • http://tetexamafikej.epizy.com/59317321942.pdfIn PDF document text
    • http://nuvebuxuloruvux.epizy.com/candyland_board_game_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/burger_king_angebote.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/best_bamboo_sheets_twin_xl.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/betting_on_the_bride_full_movie.pdfIn PDF document text
    • http://vigukesege.epizy.com/bicycle_design_an_illustrated_history.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D9 5476 bytes
SHA-256: 143659be5943883e5d1f685f5fdfd4bca235c97c13a189e1d00078c5320d2824
font_01_sfnt_off0000e86f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86F 1892 bytes
SHA-256: ccd9726d86a9b9acb60c1a83a3615e5bc81ab4eba7249cd55df4d139b233a869
font_02_sfnt_off0000f1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AC 12020 bytes
SHA-256: 12fb10785e5d3e03c7c48be9d6ba2779f5b63484cf5a7736d0852e33b110549b
font_03_sfnt_off0001199c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1199C 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940
font_04_sfnt_off00012df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DF4 1736 bytes
SHA-256: 5095ccdfdd328c3f25b1766e9c65bca58fa839170fcb9f3db3c20e130d955aff

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