Malicious PDF — malware analysis report

Static analysis result for SHA-256 a92702205e3fdaf7…

MALICIOUS

PDF

45.8 KB Created: 2020-08-05 16:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 063851907d3eebe3513973a7bcb63887 SHA-1: 44d0dbfbf2b05a9be650c4df408d90df1b35f345 SHA-256: a92702205e3fdaf704439de3b530b6f1007a6ad6299e6215ef4198cad70b0e89
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'https://ttraff.cc/pify?keyword=aura+by+carlos+fuentes+pdf+english'. This indicates a link farm or phishing attempt designed to redirect users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be the malicious redirection.

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.cc/pify?keyword=aura+by+carlos+fuentes+pdf+english
    • http://files.funkayakrentals.com/uploads/1/3/2/7/132741385/molexegasa.pdf
    • http://files.tonypalermolifecoach.com/uploads/1/3/1/4/131437740/eaf0f757.pdf
    • http://files.jmn-i.com/uploads/1/3/0/8/130814642/badegumun-vafadivo.pdf
    • http://files.meeshaandpip.com/uploads/1/3/1/3/131380733/tafupamima.pdf
    • http://files.belmontgreekfestival.com/uploads/1/3/1/0/131069886/9352398.pdf
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/tozisenalodutuvuditelu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/ziwosuxajotixodivubuza.pdf
    • https://cdn.shopify.com/s/files/1/0429/8620/9439/files/shadow_of_the_storm_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0430/6812/9431/files/lamalasitovikitomafex.pdf
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/2500628829.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/nh_dmv_forms.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/fakuwoli.pdf
    • https://cdn.shopify.com/s/files/1/0435/5129/3603/files/schaum_s_calculus_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3073/files/schizophrenia_nursing_diagnosis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/guxedofuje.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/kafibawusujewimetaxuva.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/computer_application_in_e_business.pdf
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/54024531686.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_off00007463.bin
685edbfa95f7c807fe6856cc6f40a2910ed70eaa82a5160a6bc2e8e8646cf343
pdf-font-stream PDF embedded font (sfnt) at offset 0x7463 5648 bytes
font_01_sfnt_off00008795.bin
57c554f761909eca191015e023fdb24fc33d124c7c1167df424d8dd7cb671634
pdf-font-stream PDF embedded font (sfnt) at offset 0x8795 10040 bytes