Malicious PDF — malware analysis report

Static analysis result for SHA-256 06fee2b065dc7579…

MALICIOUS

PDF

80.2 KB Created: 2021-03-23 15:25:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 191cbf705cbb6bc29b0ad59248e18ef0 SHA-1: e394bcb3559f718165f448b206f575dfbfdb13ea SHA-256: 06fee2b065dc75797e86256c98511d08c05c32502913813eb260b15425393540
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are obfuscated or lead to potentially malicious content, as indicated by the PDF_SEO_LINK_FARM heuristic and ClamAV detection. The primary malicious URL identified is https://maypoin.ru/strik, which is likely used to host phishing content or distribute further malware. The document body is heavily obfuscated, preventing a clear understanding of its direct lure, but the overall structure and heuristics point to a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=irobot+roomba+670+vs+690
    • https://cdn.sqhk.co/sovajepuxe/iaTje5Y/who_dies_in_endgame_avengers.pdf
    • https://cdn.sqhk.co/xavipinav/jHibgc0/xifumewivokuvulefozem.pdf
    • https://cdn.sqhk.co/gesimefav/Ogjjije/dwts_recap_ew.pdf
    • https://cdn.sqhk.co/gugirejol/ejhphaX/36561314317.pdf
    • https://cdn.sqhk.co/likamigid/iinvwhi/50641093143.pdf
    • https://cdn.sqhk.co/verexumifo/cjhgdhc/64543867366.pdf
    • https://cdn.sqhk.co/zetuzire/ZLTpyii/central_air_conditioning_plant.pdf
    • http://gopidap.scienceontheweb.net/80823880229.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wiremeresegikon/wotifasupuwasubug.pdf
    • https://7835c217-6b95-46a1-915a-76cdebae3fe0.filesusr.com/ugd/debfb4_6e567fa2020445fa882003e714e2b53a.pdf?index=true
    • https://8ecf7690-1f99-4e28-a4b6-3228ba9731d7.filesusr.com/ugd/63d3ad_e193019b7fd44505adc17daf5eb13fb1.pdf?index=true
    • https://121f8fc1-d270-4171-a721-8ccd656fc20f.filesusr.com/ugd/2ca22b_3489a2933a7446389651c633129fb6e9.pdf?index=true
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_ade2a9213f954961bd87b3f1356440d1.pdf?index=true
    • https://1ac5d900-0c69-4f12-8b1d-4e209472b8d2.filesusr.com/ugd/828753_40b1f53f83354b2d871141de60519dc5.pdf?index=true
    • http://zugepoguj.onlinewebshop.net/epispadias_and_hypospadias.pdf
    • https://089130c0-62ae-4bf1-a93c-656440fe8451.filesusr.com/ugd/738632_853cd8825212495d8fdeec585aa52fdb.pdf?index=true
    • http://pujumek.myartsonline.com/citizen_eco_drive_movement_list.pdf
    • https://s3.amazonaws.com/nuxulikiwab/10158994050.pdf
    • https://62abf401-5fc9-4991-ac00-cb6a0c8cf8ec.filesusr.com/ugd/e4ff69_dbe667ee7cd0412ab4ddd2bd8fc63961.pdf?index=true
    • https://80ce5912-1c67-4773-adf4-abf614566e91.filesusr.com/ugd/acb48a_1965304d676547bc9fa46587ffa47146.pdf?index=true
    • http://jowokepo.atwebpages.com/administrao_geral_e_publica_para_concursos.pdf
    • https://58f604bd-1fd8-4cfe-af9b-f15e67d030d5.filesusr.com/ugd/9a7439_9cfddf12bfdf4534b5f505c5fc2803a8.pdf?index=true
    • 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_off0000f9a4.bin
ddaec10454248092014c5d02995207b0bf279ea2973f62a902fe81c5243e4bb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A4 5468 bytes
font_01_sfnt_off00010c24.bin
baa462cafd1cefe593441daece75b3afe5e6c77f5102b95357b9683a7532bac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C24 11916 bytes

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