Malicious PDF — malware analysis report

Static analysis result for SHA-256 4033fe4ddbc43837…

MALICIOUS

PDF

79.2 KB Created: 2021-06-08 17:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: eb5e92749802f20e8ef3acc8924d46ab SHA-1: cc6f1a09158bd37b2287996e50f674d9de99d4b6 SHA-256: 4033fe4ddbc43837f631acd3fa0e99767135263e4e947afa067ba72e59364d73
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a specific URL related to 'my talking angela hack online' indicates a lure for potentially malicious downloads or phishing. ClamAV and ML classifiers strongly indicate malicious intent, likely for phishing or malware distribution.

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://irlanc.ru/pbw?utm_term=my+talking+angela+hack+online PDF link annotation
    • https://vakurizilobiwil.weebly.com/uploads/1/3/0/9/130969742/ledoborotupuduv-zomasawigudisos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470964/normal_6061f9b691e8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501645/normal_6049517c9270d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469640/normal_606df7340c61a.pdfIn PDF document text
    • https://sajawibur.weebly.com/uploads/1/3/4/6/134631073/3476336.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418777/normal_60104a4a7b8b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383925/normal_5fde3da9995e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479916/normal_6030d609bec43.pdfIn PDF document text
    • https://pufakifitapota.weebly.com/uploads/1/3/4/5/134581323/65d26d4bba93f2c.pdfIn PDF document text
    • https://siralukamowifi.weebly.com/uploads/1/3/1/4/131407299/803116.pdfIn PDF document text
    • https://nulabelavomeviz.weebly.com/uploads/1/3/1/4/131413951/kitaluruwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484999/normal_60b8763182276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449793/normal_60421eef8a5bb.pdfIn PDF document text
    • https://basazujuw.weebly.com/uploads/1/3/5/3/135301233/kogadovuga-reviga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lewiwebula.pbworks.com/w/file/fetch/144676380/55221717157.pdfIn PDF document text
    • http://wuxikadafi.pbworks.com/f/33619255508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/609cb12c-0807-4986-b3ed-da24db6ef8cc/zebefolote.pdfIn PDF document text
    • http://bilabegape.pbworks.com/f/tunopakotixirebos.pdfIn PDF document text
    • http://nagomax.pbworks.com/w/file/fetch/144825633/46381553467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22cff939-a079-4d34-9ac3-fe5f3f73176c/is_fe3_to_fe2_oxidation_or_reduction.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_off0000fc04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC04 4956 bytes
SHA-256: 2861315bf19dd1c858f8daf8c50acc70c47f9bcade6c2223a43e253fa7f1058c
font_01_sfnt_off00010cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFE 10108 bytes
SHA-256: 70b435c97212992c9cd04b96d45aab4a5456d2f2a5235f613d2b0c9e5247e56c

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