Malicious PDF — malware analysis report

Static analysis result for SHA-256 84a6a642c4dd2fb9…

MALICIOUS

PDF

41.4 KB Created: 2020-08-21 00:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b16ec872c4254dd6e614529d2c94e469 SHA-1: ecced426df894dd5331d4da41a4a2d055d52f06a SHA-256: 84a6a642c4dd2fb9ca668f69154a16d078f85b411985d89c4dd01ce3c661e9f3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm pointing to numerous external PDF files, with one prominent link to a redirector. The ML classifier strongly indicates maliciousness. The primary malicious URL is https://ttraff.ru/pify?keyword=netflix+android+app+subtitles+not+working, which is likely used to redirect the user to a malicious site. The document body contains garbled text and a reference to the malicious URL, suggesting an attempt to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.ru/pify?keyword=netflix+android+app+subtitles+not+working
    • http://rekeboza.rwswla.com/uploads/1/3/1/3/131379552/nusuwasafele.pdf
    • http://vilitoze.sharronbennettphotography.com/uploads/1/3/2/6/132683024/7961985.pdf
    • http://mutoso.hcmyc.org/uploads/1/3/0/9/130969186/matepowil-tatemivipi.pdf
    • http://bunilo.theindoorhockeyleague.com/uploads/1/3/1/4/131453247/8454304.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/98238352188.pdf
    • https://cdn.shopify.com/s/files/1/0431/6515/5489/files/lamigu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8360/files/blank_promissory_note_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/pubedawetekewutejojipavuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/blackberry_android_9_pie.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/69151308359.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/balkanski_spijun_cela_knjiga.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/certificado_medico_falso_para_imprimir.pdf
    • https://cdn.shopify.com/s/files/1/0429/1228/4831/files/sipopimakitufis.pdf
    • https://cdn.shopify.com/s/files/1/0429/6998/9279/files/53923480611.pdf
    • https://cdn.shopify.com/s/files/1/0435/5103/1464/files/importance_of_geographical_location_of_pakistan.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000639e.bin
107819df8147de5109267c8d90af7178f1d927b9767ef5a776885f03bfd0f1d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639E 5544 bytes
font_01_sfnt_off0000769d.bin
23c0ed538539e9d1d130bf5da9a43371845163d878939497a2836078ab460028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769D 9972 bytes

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