Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a456e1a912e718c…

MALICIOUS

PDF

84.5 KB Created: 2021-02-11 06:28:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 0dbd7585c57e445d2f18d19d06b5716e SHA-1: 1c10366cd3e6439f00327a6fd6189f560b7e9f4a SHA-256: 9a456e1a912e718cac5cb7c988804b68a85f03477e5099b13db6ce95ad414b92
126 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wb?keyword=c%20d%20r%20ka%20full%20form PDF link annotation
    • http://ighelperscenter.com/bahubali_movie_story_in_englishuz8o0.pdfIn PDF document text
    • http://best-ital.fun/mijexitewomedilt3zt5.pdfIn PDF document text
    • http://com-servers.online/aluminium_sheet_suppliers_sydneyaasfu.pdfIn PDF document text
    • http://respect-ltd.su/3991583980273z3z.pdfIn PDF document text
    • http://meetsoda.club/78712816450o4xjo.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/15204309846qpb2o.pdfIn PDF document text
    • http://navalny.design/pukapoxusizibodma9q5.pdfIn PDF document text
    • http://flowerport.market/44769542451a6oqg.pdfIn PDF document text
    • http://prizinsta.info/70467844718byo09.pdfIn PDF document text
    • http://finansi-7.online/toruzikasulisagorowowahffyj.pdfIn PDF document text
    • http://peuly.xyz/punctuation_worksheets_3rd_gradepbxg7.pdfIn PDF document text
    • http://reduslim-shop.website/best_browser_for_online_videos_android6srxp.pdfIn PDF document text
    • http://bokugoso.22web.org/9672612305.pdfIn PDF document text
    • http://goo-y.xyz/startup_the_board_gamezwzb1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://jilejulo.epizy.com/blank_movie_hd_video_song.pdfIn PDF document text
    • http://surobufalinaxis.epizy.com/enduring_power_of_attorney_template_nz.pdfIn PDF document text
    • http://xupanapil.epizy.com/aulaweb_informatica_genova.pdfIn PDF document text
    • http://tutegijuvejok.epizy.com/bts_wallpaper_love_yourself_answer.pdfIn PDF document text
    • http://mokodipixa.epizy.com/cibc_full_form.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AE 4492 bytes
SHA-256: 6e5ef582a0d905c1f3e87ea5853c1c83b4e85705a12a7bdd50164bf8bf980855
font_01_sfnt_off0000e3f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F0 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off0000ef53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF53 10784 bytes
SHA-256: a337ce4b3228ba5344150e1f22e92d0e2ca61abf1501cd7e2e408aae9efcb6b3
font_03_sfnt_off00011411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11411 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
font_04_sfnt_off00012211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12211 9864 bytes
SHA-256: 7e55a2c2bd4e157d978d94f2185cb4e0e15a59a5f65dec4e9875bb7cc111e743

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