Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3b2dc362a6bd19…

MALICIOUS

PDF

74.5 KB Created: 2021-05-16 12:27:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ea0950551e1e7f52cdb042f1ae79b714 SHA-1: d866acae5e415fe715d85dadeffa643b9699e90d SHA-256: 6b3b2dc362a6bd19ea1d3491600d0a32a99e0b1511a356026c46094e37ed1981
126 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 high likelihood of malicious intent. The document body, though partially corrupted, contains a lure related to Navy SEAL salaries, directing users to a suspicious URL. The presence of numerous external URIs, many hosted on disposable domains, further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=how+much+does+a+navy+seal+get+paid+annually PDF link annotation
    • http://mowefopovog.mywebcommunity.org/59680887544.pdfIn PDF document text
    • http://zagejudivavi.sportsontheweb.net/human_anatomy_nervous_system.pdfIn PDF document text
    • https://gibejeki.weebly.com/uploads/1/3/1/4/131438187/e7d92cc3f.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/vudegezariri.pdfIn PDF document text
    • http://larebalin.mypressonline.com/equivalencia_neumaticos_moto_pulgadas_a_milimetros.pdfIn PDF document text
    • http://bafedudovodamo.medianewsonline.com/27980713822.pdfIn PDF document text
    • http://rosativiwam.mypressonline.com/fundamentals_of_protein_structure_and_function.pdfIn PDF document text
    • https://duxapekekabi.weebly.com/uploads/1/3/1/3/131381277/3388551.pdfIn PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/pibezovix-runojadoro-faditojiv-josepa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://resilasijajatil.myartsonline.com/talk_like_ted_carmine_gallo_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/free_world_map_outline_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/elementary_my_dear_watson_worksheet.pdfIn PDF document text
    • http://gukutimaguvuzum.onlinewebshop.net/orbit_57894_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1508fed5-4e7e-455e-83ea-108328c82fdb/42831767492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4badb247-468e-488e-94d2-6d0fd37cccc4/xulesoxemikineperolexudi.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/31130031431.pdfIn PDF document text
    • http://susabumo.atwebpages.com/60163746142.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/sierra_circular_skilsaw_5150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/147c50d7-f2ae-420b-80a9-81cdbe69e184/genuine_stihl_autocut_c25_2_2.4_mm_trimmer_head.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c3646d-8f51-48b6-a473-1f99aa472652/49439634979.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/a_week_of_mondays.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/format_date_in_django_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66C 5488 bytes
SHA-256: ccef715430a24f8d93d9baeccce4fd87e61f5669387851ea74986c8ee8922c87
font_01_sfnt_off0000e910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE910 11216 bytes
SHA-256: bfd86f0284dbc60bf4d29cb92ca038520ba2426a85ca409807ee4e9149125b66
font_02_sfnt_off00010e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E41 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378