Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd18a3b89dc50c0d…

MALICIOUS

PDF

75.7 KB Created: 2021-03-24 10:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: aaf236e1b5ca6673eec671347ce449bb SHA-1: 78a68983a068da9ed8285bfc1f7e0ff6cfa5db4c SHA-256: fd18a3b89dc50c0dcaa57a0c55a7805c0cbe60a7bdff5c9c74a31adc03dfe57b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a phishing site. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, appears to be a lure related to 'Cloud 9 donuts', likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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://seumenha.ru/strik?utm_term=cloud+9+donuts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403688/normal_6030980c72a92.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/jonumuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450890/normal_6056a68cbb055.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/animals_coloring_pictures.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488101/normal_5fd7cd7fdfcce.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/gizonukorad/pomedajafopikimusil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e5b0e0-358a-4d14-98c0-2690814ddfb8/81239819780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ae9acf-3383-4d14-bf2d-b5f8d9ede58b/static_and_dynamic_characters_in_the_adventures_of_huckleberry_finn.pdfIn PDF document text
    • http://xibubixina.epizy.com/alter_ego_3_guide_pedagogique_gratuit.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/agriculture_college_in_maharashtra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e222b97-030b-4e59-a411-928f2d9dc824/minecraft_lighthouse_schematic.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/77226527629.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/kolifatitalazaxopilulod.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/tijemotokuwesarajewuwabax.pdfIn PDF document text
    • http://rubirabe.rf.gd/56325566638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29dca422-65cb-4e64-a41c-b3d4e55a3d6e/vilefadutakufotip.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/bushnell_neo_ion_golf_gps_watch_strap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/778f0747-56f4-439b-b0e1-67dde5b70ade/whats_pre-op_before_bariatric_surgery.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/bidowab.pdfIn PDF document text
    • http://kikumofesokir.rf.gd/31195539220.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/facebook_messenger_apk_4._4._2.pdfIn PDF document text
    • http://vorokam.rf.gd/bhagwan_ke_video.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/sig_sauer_p320_x_carry_vs_glock_19.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/bare_necessities_piano_sheet.pdfIn PDF document text
    • http://zegudonokor.epizy.com/52756872431.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_off0000ebfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFC 4572 bytes
SHA-256: 8b5d6d8cf339094595d98f06d6c7736b69aa618c9598c1fa809dbf951a49a2ec
font_01_sfnt_off0000fb96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB96 11180 bytes
SHA-256: 081c1b2e0fe67cc8b6a088f648f5486306ff703a83ebde274796416412801696

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