Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d46ea8e43af25f…

MALICIOUS

PDF

106.2 KB Created: 2020-10-23 03:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27fa8944b049c07a6b47c417e0d36864 SHA-1: f7ed694adfc3d1231bb082c080693e4ede5ba301 SHA-256: 44d46ea8e43af25f4a72febeb27e21f84671f868ebd7645934b1d3d56c5f1d3f
152 Risk Score

Malware Insights

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

This PDF file exhibits malicious characteristics, including a high number of embedded links to external PDFs, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://cctraff.ru/strik?keyword=analisis+estructural+hibbeler', is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and the presence of suspicious URLs indicate a potential attempt to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?keyword=analisis+estructural+hibbeler
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdf
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279107.pdf
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/tovakuboxe.pdf
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/xufuxunawizidu-pefuz.pdf
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/duretazejoso.pdf
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/selanegadasadusokopu.pdf
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8980310.pdf
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/kipibakixek.pdf
    • https://vemewibikem.weebly.com/uploads/1/3/0/7/130776349/9087219.pdf
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/dcd826685938.pdf
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/jeripadazabe-zorijivexi-mavuz.pdf
    • https://kisogegexene.weebly.com/uploads/1/3/4/3/134374262/492813.pdf
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/jawokenozemove.pdf
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/4149676.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/0077/2246/files/glow_in_the_dark_tennis_balls_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/snowball_mic_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/converter_documento_para_docx.pdf
    • https://cdn.shopify.com/s/files/1/0433/8217/7946/files/beluju.pdf
    • https://cdn.shopify.com/s/files/1/0433/7565/7125/files/article_370_35a_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0502/4818/8104/files/nikon_capture_nx-d_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/6172/1765/files/70665155860.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016fa7.bin
8bf801b81134b2d34627a0f10fcad0b429a922ad8894f6c6a988fea9ec4db2f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x16FA7 5016 bytes
font_01_sfnt_off000180a1.bin
f849efff19174a85794b20404f7a1b20c43659d6ff1635816ebf024f331ebb5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x180A1 14880 bytes