Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6ebed4363bb208…

MALICIOUS

PDF

82.4 KB Created: 2021-06-04 04:10:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 253f3b48a4b7cefa815a0e1582b94781 SHA-1: 1f3a856e86ab1895fd5cdbb93c4eabc64d0e33e2 SHA-256: bb6ebed4363bb2087e5ba24f28e6997af59128a88f3f22d947a286f393455efc
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO spam operation. The embedded URLs, such as 'https://crewmak.ru/pbw?utm_term=what+is+the+roblox+id+code+for+death+bed', are likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crewmak.ru/pbw?utm_term=what+is+the+roblox+id+code+for+death+bed PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405644/normal_600fc3aa8d312.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443610/normal_5ff6b63eab3a2.pdfIn PDF document text
    • https://kobafanosige.weebly.com/uploads/1/3/4/0/134016660/477e5f66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446944/normal_5fda78b04e50d.pdfIn PDF document text
    • https://jikodidujur.weebly.com/uploads/1/3/5/3/135319234/40b745bf4dce81a.pdfIn PDF document text
    • https://lisubavami.weebly.com/uploads/1/3/4/3/134331762/tikobegisawupafe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382408/normal_6062ffe942b3b.pdfIn PDF document text
    • https://gofuzuxelizexo.weebly.com/uploads/1/3/5/3/135391542/lekawofo_rokowidojolimo_lazutijekowuk_xagapikopawe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404105/normal_6021bd7957c52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460954/normal_603f11367a98c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475737/normal_606ea05e6fc25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_606d9ed31b46a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415930/normal_5ffe782eadb9a.pdfIn PDF document text
    • https://velupilarase.weebly.com/uploads/1/3/5/3/135341581/gotawejijilas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384851/normal_6041db72ea674.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kiletejude.pbworks.com/w/file/fetch/144412638/88528917727.pdfIn PDF document text
    • http://sipibujewadu.pbworks.com/w/file/fetch/144499260/vagelexijuri.pdfIn PDF document text
    • http://sorawako.pbworks.com/w/file/fetch/144477891/letapuvugigisaxib.pdfIn PDF document text
    • http://xixokuzujoz.pbworks.com/w/file/fetch/144427233/apex_legends_aimbot_ps4_download.pdfIn PDF document text
    • http://siwuromo.pbworks.com/w/file/fetch/144424617/78534742448.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_off000104b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B6 5332 bytes
SHA-256: 9b07e5b9eb6568020889f2c099be17f7769c1fc45d0dd16f14b8fdc4497df861
font_01_sfnt_off000116e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E1 11228 bytes
SHA-256: 0205d757ac71b98638e80934c78385696a7e4ef2d7b306992df0a8648d5bb48d

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