Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce02da9a514cc45…

MALICIOUS

PDF

80.0 KB Created: 2021-03-13 19:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7477620b53e5e99c514a955db04b711c SHA-1: 12ade106791386da218cb4ec50b129814985c347 SHA-256: dce02da9a514cc452d6191152311964d371a6aeb772f5ec455f3b4c1645e3746
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing attempt. The primary URL, https://kuzutuzo.ru/strik, is presented as a search result, likely a lure to trick users into visiting a malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/strik?utm_term=why+does+my+summer+baby+monitor+beep
    • https://juxufosuzuvol.weebly.com/uploads/1/3/1/4/131437906/widagedutefema.pdf
    • http://munasimowijuxi.getenjoyment.net/batoluwawilegunugebefiju.pdf
    • https://gedimonisesejed.weebly.com/uploads/1/3/1/1/131163996/kukin.pdf
    • http://sibogufurab.medianewsonline.com/htc_m8_mini_screen_replacement.pdf
    • http://pitowiragomiwa.22web.org/rijoseminilufa.pdf
    • http://suzuxef.22web.org/tavitujijosarikimas.pdf
    • http://paxenazubenib.mygamesonline.org/cooling_tower_water_treatment_basics.pdf
    • https://bazofaxeretaw.weebly.com/uploads/1/3/4/8/134868688/8b9362738.pdf
    • http://tipijijajofupi.sportsontheweb.net/achilles_tendon_rupture_rehab_protocol.pdf
    • https://viremekim.weebly.com/uploads/1/3/1/4/131407965/f4f82eca4.pdf
    • http://jazeforip.22web.org/bowazip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zulezov/bastille_oblivion_piano_sheet_music_free.pdf
    • https://s3.amazonaws.com/mokuwanibof/safutenigumuviziziwu.pdf
    • https://s3.amazonaws.com/bomifabipi/27246621353.pdf
    • http://givonomiruf.rf.gd/medical_terminology_textbook.pdf
    • https://s3.amazonaws.com/liguwubore/anglesey_coastal_path_map.pdf
    • http://famekuputoda.myartsonline.com/vunesojofen.pdf
    • https://s3.amazonaws.com/vufupu/32231395535.pdf
    • https://s3.amazonaws.com/fopalew/acer_nitro_5_gaming_laptop_walmart.pdf
    • https://s3.amazonaws.com/legapatatezisa/58704599389.pdf
    • https://s3.amazonaws.com/viwoxuz/27736772103.pdf
    • http://fawofalolujug.epizy.com/monogimezopekafoviridip.pdf
    • http://baxewape.myartsonline.com/schema_analisi_del_periodo.pdf
    • http://kawerulim.onlinewebshop.net/nafoxoletidajivilif.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_off0000fb59.bin
e821434b0686aca27e58bd8ab3330c89ce7bc6e2f9389ad8d4afe41463772ae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB59 5420 bytes
font_01_sfnt_off00010da9.bin
79a9e173b443f7282ebd2ab8c8dc81026b669a653089472d291dcaf673f8143c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA9 10856 bytes

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