Malicious PDF — malware analysis report

Static analysis result for SHA-256 505aa350142d628e…

MALICIOUS

PDF

68.1 KB Created: 2021-02-28 14:45:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1d916c47c07bfe9f2aec296c97b0d0a0 SHA-1: a7b7e22692250dfa8e52681031111d4f48982264 SHA-256: 505aa350142d628e67dbb42c53fa5902be0b6d033a301661072d536dfa986836
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8606

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/award?keyword=how+many+wonder+week+leaps+are+there PDF link annotation
    • https://marejipafikelor.weebly.com/uploads/1/3/1/4/131437604/7746947.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485162/normal_5ffa1545c8c35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483345/normal_600af5f2669da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468837/normal_5fe0bc5e0a579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454280/normal_603ac58b20f47.pdfIn PDF document text
    • https://befutoxe.weebly.com/uploads/1/3/4/4/134443098/parowoditiba.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/what_is_the_price_of_ps_vita_in_india.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/le_guide_culinaire_amazon.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/41464404113.pdfIn PDF document text
    • https://wipigoxexidon.weebly.com/uploads/1/3/2/6/132682030/jomiraduti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388818/normal_5fe3358f2f471.pdfIn PDF document text
    • https://tizelizenofus.weebly.com/uploads/1/3/0/7/130740364/joremujuvelumijomada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493891/normal_602c5d3a9eb9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372382/normal_5fdf6f7ad9fe6.pdfIn PDF document text
    • https://tebobasuzojipol.weebly.com/uploads/1/3/1/4/131407082/95d4adc7.pdfIn PDF document text
    • https://jesipawuba.weebly.com/uploads/1/3/0/8/130874316/xebuf_derovu_sodijelesavupob.pdfIn PDF document text
    • https://kiwaluraxipexe.weebly.com/uploads/1/3/5/3/135326690/13879d04da22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420612/normal_6000fb700b73b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465149/normal_5fc727eb85897.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vujapoguxesak.myartsonline.com/what_do_moca_test_scores_mean.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/20709603045.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/lista_de_verbos_regulares_irregulares_en_ingles.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF75 5416 bytes
SHA-256: 3bafaf5c2d65cd21a1bb9c05d12941c5dc7108b2ec6b5cdbd65055aed5891ba1

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