Malicious PDF — malware analysis report

Static analysis result for SHA-256 152ee9a2d1409c43…

MALICIOUS

PDF

86.5 KB Created: 2021-03-27 11:03:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 1dfbddd36ed6bd7dda161596c13ad86c SHA-1: cf6acc14f978b161ca498150f074b464e18981f7 SHA-256: 152ee9a2d1409c43b051b28783bbca957991cddf489d4a405b86d73fa18f198c
126 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users. One prominent URL, 'https://xezojetit.ru/wix?keyword=download+vo+lam+truyen+ky+mien+phi', appears to be a lure for downloading a game, which is likely a pretext for distributing malware or conducting phishing. No scripts were extracted, but the PDF structure and URL patterns are indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/wix?keyword=download+vo+lam+truyen+ky+mien+phi PDF link annotation
    • http://baramijotafexo.mypressonline.com/71879680699.pdfIn PDF document text
    • http://sukasuzanefojax.22web.org/81_fresh_fun_critical-_thinking_activities_answers.pdfIn PDF document text
    • http://jonotijero.medianewsonline.com/ssc_stenographer_model_question_papers_with_answers.pdfIn PDF document text
    • https://ledijonag.weebly.com/uploads/1/3/4/6/134689342/vizabidokozoxobis.pdfIn PDF document text
    • https://waretopaze.weebly.com/uploads/1/3/4/5/134529701/c41e8a.pdfIn PDF document text
    • http://clipshd.design/what_is_the_purpose_of_a_quit_claim_deedgarlq.pdfIn PDF document text
    • http://tamigome.scienceontheweb.net/20946243633.pdfIn PDF document text
    • https://sowidokobixu.weebly.com/uploads/1/3/1/8/131856306/6970951.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/energy_storage_devices.pdfIn PDF document text
    • http://hookup157.site/nixiwoburubuxvhsh.pdfIn PDF document text
    • http://worldworkbook.com/introduction_to_economic_systems_worksheet_answers88wth.pdfIn PDF document text
    • http://pubofumoxo.scienceontheweb.net/71732082290.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://niginikixino.epizy.com/how_to_turn_on_bluetooth_in_hp_probook_4430s.pdfIn PDF document text
    • http://pezamax.myartsonline.com/global_trends_in_human_resource_management.pdfIn PDF document text
    • https://d7b50aa0-fea3-4edc-ba9e-4ed0094b0c60.filesusr.com/ugd/7f614e_2d5ff6338d5c46b0855a48107add1e76.pdf?index=trueIn PDF document text
    • http://kolupus.epizy.com/how_do_i_recover_my_original_facebook_account.pdfIn PDF document text
    • http://lokimutopilar.epizy.com/82657483842.pdfIn PDF document text
    • https://2489a575-72f7-492f-b117-28cfe4a4d2a3.filesusr.com/ugd/d81705_37c90ca18b2246b990057a30777c6420.pdf?index=trueIn PDF document text
    • https://5e73d190-47a4-4ead-99bf-7e9069f06a16.filesusr.com/ugd/55cc32_4237b6a776864e37977cd49834e96b2f.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED90 5336 bytes
SHA-256: 05e0bab139f7b802f296468aded3db13fd41d0d5ac3c370fbc92ce2b3b1d339e
font_01_sfnt_off0000ffb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB0 25016 bytes
SHA-256: 6e4579f0c7fefca2f42fb86f5e455c776ab8601dbed4d75621cb7e1d1a300520
font_02_sfnt_off0001356c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1356C 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

Open this report in the interactive analyzer, or submit your own file for analysis.