Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5bb7b38b7b1dba…

MALICIOUS

PDF

81.4 KB Created: 2021-03-04 21:04:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3d87d0a01f125defa01fd0bbcb2b4111 SHA-1: bef59062d8059e39db66b634cb0d894758d4e254 SHA-256: 2e5bb7b38b7b1dba08b36f8fc32ed54913caeecf53d24e504d9f7f84c92b99c1
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a PDF link farm containing numerous external URIs. The ML classifier and ClamAV also identified it as malicious. The presence of embedded URLs suggests an attempt to redirect users to potentially harmful content, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/award?keyword=late+night+bars+downtown+atlanta PDF link annotation
    • http://kmplitka.shop/what_does_it_mean_when_moon_is_in_aquariustsnid.pdfIn PDF document text
    • https://cdn.sqhk.co/bofozuto/Lshaia6/xibisuwafagukidid.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/dMphfSI/two_player_games_air_hockey_apk.pdfIn PDF document text
    • http://vehicleusains.com/do_all_cia_employees_go_to_the_farm1a4g1.pdfIn PDF document text
    • http://newyearshop.site/sai_bhajan_lyrics_marathiw27he.pdfIn PDF document text
    • https://cdn.sqhk.co/bizifabov/TFHUUjj/gun_master_2_game_download.pdfIn PDF document text
    • https://xudutufatixoli.weebly.com/uploads/1/3/5/9/135957433/rusomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455914/normal_6031b83745547.pdfIn PDF document text
    • http://calipshatngaccs1.xyz/what_channel_is_newsmax_tv_on_cablevisionuj9hu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450145/normal_6034c27439de8.pdfIn PDF document text
    • http://reduslim-ordina.site/download_zombie_live_wallpaper_for_pcosb85.pdfIn PDF document text
    • https://luvagifewu.weebly.com/uploads/1/3/4/7/134766249/aa355ee0de1.pdfIn PDF document text
    • https://xakanokemuma.weebly.com/uploads/1/3/5/9/135965718/zezimeniguli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444850/normal_5fe2b138ef411.pdfIn PDF document text
    • https://junenewawaxi.weebly.com/uploads/1/3/1/4/131407408/2304548.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447278/normal_5fc80da36d9d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_60405d86467dd.pdfIn PDF document text
    • https://ponebivilu.weebly.com/uploads/1/3/4/5/134505494/jedenuvuw.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/rujabepifar/62029279877.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/67462314284.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/mmhg_full_form_in_medical.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/opera_mini_beta_browser_app.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/11888681751.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/openhab_setup_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/findings_meaning_in_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/what_setting_should_my_rheem_water_heater_be_on.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/19791738969.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E9 5260 bytes
SHA-256: 624da0e3ca034f5b591d3ddea24725e334cbf509d7c6c970e7e3ce8f1c5a8857
font_01_sfnt_off000113d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D6 10664 bytes
SHA-256: f1f0f6e1d29a5fb1dba8875b54b029fb57223ae4229d782df22314540ae07d66

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