Malicious PDF — malware analysis report

Static analysis result for SHA-256 0246dd90b52d72d7…

MALICIOUS

PDF

77.7 KB Created: 2021-04-12 07:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 361ed8f12a62794601c07cb2793bcd97 SHA-1: 2e587e3b63ac44d85cee461c2d6047f4dc9d01f2 SHA-256: 0246dd90b52d72d7b96ac7c476ff238dba328c8d9b06e8396857f7df806bb277
136 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, and multiple other URLs that are likely part of a phishing or malware distribution campaign. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be instructing the user to open a password-protected archive, a common tactic to bypass security filters. ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/strik?utm_term=why+won%2527t+my+portable+gas+fire+light
    • https://cdn.sqhk.co/mafulavet/bhiUjhd/501_free_new_escape_games_2_level_60.pdf
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/d3d44729ba8a.pdf
    • http://hihikane.space/74069045214es03v.pdf
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdf
    • http://vipimuxatomefi.medianewsonline.com/rocket_science_for_babies.pdf
    • https://cdn.sqhk.co/berirenike/ZPhbMie/136670283.pdf
    • http://prazdnikprosto.ru/how_to_study_for_ham_radio_license_testbmv6c.pdf
    • https://cdn.sqhk.co/kisasizaro/cgdcidf/forge_ahead_game_ores_ranking.pdf
    • http://xapowuxif.mywebcommunity.org/guvejukomiz.pdf
    • https://cdn.sqhk.co/luwokiseg/jkOX0lI/neo_geo_mvs_console.pdf
    • https://taleputara.weebly.com/uploads/1/3/4/3/134305900/domig-jiwixiravigom-kanafemi-nitebi.pdf
    • http://xinuvaro.sportsontheweb.net/rakipafetaxatafa.pdf
    • https://rosowimibezot.weebly.com/uploads/1/3/5/3/135392622/gipetegotubido_xemepakuze.pdf
    • http://nunovoxiwanafuz.getenjoyment.net/afcat_2020_solved_question_paper.pdf
    • http://wolifote.getenjoyment.net/to_all_the_boys_i_loved_before_book_series.pdf
    • https://cdn.sqhk.co/woberimi/hgzINic/jesus_of_history_christ_of_faith.pdf
    • http://bekopomulasebi.getenjoyment.net/37116587886.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zibevili.onlinewebshop.net/3358662857.pdf
    • http://wepikupovug.myartsonline.com/baybayin_letters.pdf
    • http://bilofudako.onlinewebshop.net/7324764049.pdf
    • http://sulijugofogim.onlinewebshop.net/adverbs_of_degree_esl.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_off0000f222.bin
5f1e57d1b0a93ae3799de4687efe480f85888f2e66ce1e0e316d37e7c86e825e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF222 5696 bytes
font_01_sfnt_off00010583.bin
af215cceac058df863a4e274f5bedde875db23f15402a4e4a48badce159c60a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10583 10400 bytes