Malicious PDF — malware analysis report

Static analysis result for SHA-256 095e05b68cade8fc…

MALICIOUS

PDF

92.6 KB Created: 2021-05-29 20:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4cec97740c028fb043e75a4eb350ee6c SHA-1: 5a6c8d952de1333c18108e0ff32718f15ba97c85 SHA-256: 095e05b68cade8fc866ac1b1457522e35aad9bab50a0845e30d275946f84a715
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, and one prominent URL suggesting a lure for 'Baldi download game jolt'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or a scam. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://golowaki.ru/strik?utm_term=baldi+download+game+jolt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460450/normal_601ad347d88da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412592/normal_602948a9f193d.pdfIn PDF document text
    • https://jemogofeti.weebly.com/uploads/1/3/4/0/134042608/0d24c706e.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/tafapunekuj-zawezixaniwa-wimop-sofulesife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462038/normal_601ab27b5f39d.pdfIn PDF document text
    • https://xaziribubeka.weebly.com/uploads/1/3/4/3/134397614/260320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407576/normal_6063ad315ca36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447669/normal_5fc6bb18a80cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_6049a05d78057.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4476275/normal_60aff1b75956a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496605/normal_606a39f3ad18d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373769/normal_602b732292a12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490725/normal_606ae6f2db89b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424689/normal_6012e22e7e5ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391327/normal_6048ee2f3be4c.pdfIn PDF document text
    • https://kibepujuvug.weebly.com/uploads/1/3/4/6/134644113/zosotuzadag-sunon-vurerafiju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a80fb1-38d3-426d-9c3d-81992f1bbd9e/31811934744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caf32618-9f19-4cd6-9768-5212025dfd15/how_to_wind_a_bobbin_on_a_singer_fashion_mate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ac1c3c-3530-4385-a7bb-ec464f98fd5a/is_it_worth_staying_alive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/232780e7-0573-471f-9b55-4cdc826331e1/exercice_complment_du_verbe_cm1_avec_corrig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc136cdb-be2f-4dec-8251-e81f270aded1/what_is_the_average_size_of_a_badger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e94c6ac8-8270-42d7-b098-3c655accba0a/giviwerovegorabizija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c460dfd-a5e8-4134-be56-3d085be8b743/what_is_111_in_the_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81857a8a-d90d-4bb2-a77b-1bdff5bf6524/lexubuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45a04f64-867c-4af6-8625-6099d3dd33e6/the_chemistry_of_fireworks_webquest_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/775ad99c-453c-41d9-9152-49f58649fbbc/buwet.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77D 5088 bytes
SHA-256: 7429c512e460a3403f7b5639022f06b463683ab844cfa1ed11db15a6a4572e34
font_01_sfnt_off000108cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CC 6552 bytes
SHA-256: 9f03d61b0fd48f797bb2b268698a550a941b4c43f6c07d30377c7a8a82b5d347
font_02_sfnt_off00011e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E54 2244 bytes
SHA-256: b299de69e66b3436fa76b9b023b5fd3b7e75c5866187ac0de208fe8d67db69b3
font_03_sfnt_off0001287e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1287E 11088 bytes
SHA-256: 6c784bfe9393279644dc34f87102e2893a8c2904fbbd9afb7212cd2422a73348
font_04_sfnt_off00014eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EAA 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e