Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8a029cf57afb270…

MALICIOUS

PDF

44.6 KB Created: 2020-08-28 13:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac3f3eac9b90e2f51e2a43262eb23209 SHA-1: 3c0acc3f67882ae42209e56d5f41ca5936cf523b SHA-256: f8a029cf57afb270707bd9a48e8dd88a303c2a937eace45b237e79bfb569cd0b
150 Risk Score

Malware Insights

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

The PDF contains a lure for a free movie download, which upon clicking redirects to a malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the redirection to known malicious infrastructure. The ML classifier also strongly indicates maliciousness. No scripts were extracted, but the document body and heuristics point to a phishing or redirection attack.

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.com/pify?keyword=avengers+age+of+ultron+free+download+in+telugu
    • http://wivevus.humanizing-ai.com/uploads/1/3/2/7/132712354/9572047.pdf
    • http://files.sportshares.net/uploads/1/3/0/7/130776481/6701229.pdf
    • http://vitejiv.djspeaking.com/uploads/1/3/1/4/131409090/43e59322a.pdf
    • http://files.nicetynecessities.com/uploads/1/3/1/4/131453065/eb13a.pdf
    • http://tiny-ulr.info/x/4o4jclick
    • https://cdn.shopify.com/s/files/1/0428/5733/2895/files/coast_guard_beach_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/8461/9681/files/dibitoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/vivewa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/blitz3d_programming_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5997/0202/files/cash_flow_forecast_sample.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/49410026811.pdf
    • https://cdn.shopify.com/s/files/1/0434/6049/3474/files/cuales_son_las_funciones_del_marco_teorico.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8117/files/sumilu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/waligolimaxawegu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/estadistica_descriptiva_e_inferencial_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/sel_dan_organel_sel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/fobawogamelabigasomuvet.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_off00006f97.bin
4bc3b911529ecbfbd42ee26cc98e645abb424ad2fc7b0c3aa0d0ff95188e839c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F97 5216 bytes
font_01_sfnt_off0000817a.bin
26124a876efd6c9dad68ffe3d7bbc7e322e494601dac5e47435fdf56746eb4b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x817A 10380 bytes