Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c6ea3cdeeb6356…

MALICIOUS

PDF

77.9 KB Created: 2021-05-20 19:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0c49751993a58486a7f24a6abd51e31 SHA-1: 221f7930eadacb8b1e70b03f0bd5cdd191df42cf SHA-256: 40c6ea3cdeeb63560c113709acef79fd439ade002a80f0fa8a09721fe4c835a1
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The document contains a large number of external links, suggesting a link farm or redirection tactic, and the primary URL points to a search query for 'wanted full movie hindi download mp4', likely a lure. No scripts were extracted, but the PDF structure itself is being leveraged for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/strik?utm_term=wanted+full+movie+hindi+download+mp4
    • https://cdn-cms.f-static.net/uploads/4368949/normal_6065a33f7e7d4.pdf
    • https://cdn-cms.f-static.net/uploads/4380082/normal_6056d0b274c95.pdf
    • https://cdn-cms.f-static.net/uploads/4458163/normal_5fd28657c2619.pdf
    • https://kobokudebixisog.weebly.com/uploads/1/3/5/3/135390699/4658caf52d3c99e.pdf
    • https://risixugetiso.weebly.com/uploads/1/3/5/3/135317557/dunila.pdf
    • https://sowozulame.weebly.com/uploads/1/3/4/7/134733070/9096601.pdf
    • https://rawunawikurek.weebly.com/uploads/1/3/5/9/135967659/firufikaxazunefe.pdf
    • https://jabakatuni.weebly.com/uploads/1/3/1/0/131071057/ed7e99864290.pdf
    • https://vewisegi.weebly.com/uploads/1/3/4/4/134434396/xiwibomunasaw.pdf
    • https://static.s123-cdn-static.com/uploads/4409798/normal_6009231a33d23.pdf
    • https://cdn-cms.f-static.net/uploads/4420013/normal_605a36acacb41.pdf
    • https://kagesurofuzesik.weebly.com/uploads/1/3/5/3/135303772/rolikegotir_lupato_fonupozalum.pdf
    • https://cdn-cms.f-static.net/uploads/4495558/normal_601f2f5b88464.pdf
    • https://vopuxobud.weebly.com/uploads/1/3/5/9/135974080/kuwipekogalom.pdf
    • https://static.s123-cdn-static.com/uploads/4450145/normal_5ff7f7b88b554.pdf
    • https://fiferogupinuwa.weebly.com/uploads/1/3/5/3/135306016/fofifam.pdf
    • https://tizalabap.weebly.com/uploads/1/3/0/7/130775180/bonokagina.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a4df13ae-65e8-402f-8923-1fbb253c4871/38734860485.pdf
    • https://uploads.strikinglycdn.com/files/95c04f42-e565-46d8-b31b-84a31617e565/vadufamobovomam.pdf
    • https://uploads.strikinglycdn.com/files/56d31761-9b23-4d66-bb49-a9afe596ed15/musozaje.pdf
    • https://uploads.strikinglycdn.com/files/c2a495ee-eadd-4c36-9570-5af367acf97a/meditations_descartes_quotes.pdf
    • https://uploads.strikinglycdn.com/files/957a48ba-39f8-4b3b-85ab-06d1b8663b76/tabumozir.pdf
    • https://uploads.strikinglycdn.com/files/4a3c4e51-610d-4393-8426-518b75b7d5ce/joxifijo.pdf
    • https://uploads.strikinglycdn.com/files/2975f40c-d980-4445-af59-382bac9be03e/lililesasuxuwijavoluzag.pdf
    • 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_off0000f371.bin
c4e235fc575b8eaed0ec10b4c8a2e7c57039c36131a3f21695133d523f16e746
pdf-font-stream PDF embedded font (sfnt) at offset 0xF371 5260 bytes
font_01_sfnt_off00010559.bin
1ddb4d5faf7f1db27bb65b1c4399d3b1f8e9063b6b82e0166c87a648c78807d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x10559 10804 bytes