Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b2939ed1c8ff57…

MALICIOUS

PDF

75.0 KB Created: 2020-11-26 03:23:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bedf58ebf5b2277aa4986e152c6e13c9 SHA-1: 06e7d05db07c91ca9fac26f87b4f84f5ca25678b SHA-256: 19b2939ed1c8ff5784c60b6eef6e13108433138d3a121a03b67156cd95ee7fb6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site, disguised with content about making a fishing spear head. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing lure, likely intended to lead the user to download further malicious content or provide credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/strik?utm_term=how+to+make+a+fishing+spear+head PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f961768bcfb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450878/normal_5fbce8fa6b3f2.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
    • https://s3.amazonaws.com/dutimajizowa/aneurisma_de_la_aorta_abdominal_sintomas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55e0147b-b977-4514-a05b-6f7add409e3b/honda_nsr_125_sport.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ee2977-417a-4e6c-a030-330e272ebea0/jurassic_park_builder_hack_no_survey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ac9f33f-eb54-49ed-a60a-60de844cfa10/83122077991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9daca8a-14aa-4043-98ec-c6e9f6113935/remuweximunoxide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4e459d7-de2f-453c-9fed-9eb059ad5475/14051910305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0999128-48c5-47c9-bdb7-cf88378e2553/62994255117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e9c3bbd-12b0-4bca-ae66-8375493d6bf0/pampered_chef_cookie_press.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ffece45-d3aa-47c7-afa4-476ae404c89f/46050850981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/397eaf96-2660-4705-9f3a-13889f00f2dc/unknown_mortal_orchestra_multi_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a153f4ce-807c-44d5-b1ea-446cf5e579bf/wwe_supercard_credits_hack_no_survey.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE3 5328 bytes
SHA-256: ebc0a57fa2c5f1bfee029c93c162d60c3fee4f65a8dc0af912bfbbeea91e93f5
font_01_sfnt_off0000e0ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AB 6184 bytes
SHA-256: 03271981701b2de4178ee9fa5a3755a8b54ae9e99a65428e3acc04a9e4c4136b
font_02_sfnt_off0000efa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA8 9668 bytes
SHA-256: b22350b1c481e4ab78836b1728b175667839b050293077221fbf36f3030d13e2
font_03_sfnt_off000110af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110AF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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