Malicious PDF — malware analysis report

Static analysis result for SHA-256 76f2603c1151cd5d…

MALICIOUS

PDF

73.4 KB Created: 2021-04-13 10:40:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88b8d5052325688728ae84acbd8ea9d0 SHA-1: c33526d8717e30ba292657490b8d7a6429fb7c33 SHA-256: 76f2603c1151cd5d8bdf97afcee2f04c4551f3807da0fa8d77f15c8c93b74102
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, suggesting it's part of a link farm or SEO spam campaign designed to direct users to potentially malicious websites. The embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/strik?utm_term=what+is+plate+fin+heat+exchanger
    • https://sijudunewofas.weebly.com/uploads/1/3/4/6/134696620/simudevejoboniz_tewomatesazeb_nijuve.pdf
    • https://cdn-cms.f-static.net/uploads/4446944/normal_603a570de554f.pdf
    • https://static.s123-cdn-static.com/uploads/4376879/normal_5feeee7b7123c.pdf
    • https://tagenomamoz.weebly.com/uploads/1/3/4/4/134476715/wifegibilega.pdf
    • https://koduvorubosu.weebly.com/uploads/1/3/4/7/134719400/fejokogerulusat_rofol.pdf
    • http://nopipawipafa.22web.org/hp_laserjet_pro_400_color_printer_m451nw_datasheet.pdf
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/sesipiloxek_wuzuwewave.pdf
    • https://cdn-cms.f-static.net/uploads/4494875/normal_6016d16d5ef0c.pdf
    • https://nosuzodudoj.weebly.com/uploads/1/3/4/5/134588086/ridofowatitaz-kufuvojetisolo-lunev-buvekadezew.pdf
    • https://static.s123-cdn-static.com/uploads/4478683/normal_5fedf2d5245c3.pdf
    • http://nukotim.iblogger.org/mobile_phone_accessories_market_report.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/76180b22-d564-43f7-a11c-4b36f169365e/how_long_do_ge_profile_refrigerators_last.pdf
    • https://uploads.strikinglycdn.com/files/1a284da8-b529-411d-b4b5-71120baca84b/how_to_turn_off_demo_mode_pioneer_deh-6400bt.pdf
    • https://3857ddc0-2b33-46ba-b4a8-ebef9b167687.filesusr.com/ugd/5cc0d5_fd106f1915da475e8ad54abfd2910a5c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b666b80d-33a8-4697-a5a6-11adb468ad3d/41581657929.pdf
    • http://dakelajipupak.epizy.com/fourier_analysis.pdf
    • https://uploads.strikinglycdn.com/files/72aa0ac8-73f8-49db-b45d-2efbc18e4e7e/how_old_is_kenneth_hagin_jr._son.pdf
    • https://df1882fa-13c5-42f1-8438-577935b594b9.filesusr.com/ugd/91932b_7f9d05fe3ced4b34adcb19ce8a3d7edb.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_off0000e0e3.bin
1f2f19995c11339926ac46ccd1785d9cb71ce9e6d596627a0aff6719432ffbd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E3 5360 bytes
font_01_sfnt_off0000f32e.bin
652a85e02918cb1303155872d832641fd32dc1b177619f04711e16b517ac61d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF32E 10832 bytes

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