Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7ed9393e53e4de…

MALICIOUS

PDF

51.9 KB Created: 2020-08-22 22:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cb1422634fbac90a17a7f843d605eb5 SHA-1: 798e0cdf637a40576a23597a8cad49e72e23cfeb SHA-256: cb7ed9393e53e4ded1e6431250377ffde7f62384bf5d22304332206a10372558
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a movie video song, intended to lure users to a potentially harmful website. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=naqaab+bengali+movie+video+song
    • http://files.drkirstensingler.com/uploads/1/3/1/8/131856352/db6b1c4cabeb66e.pdf
    • http://dikunut.cdl4dvd.com/uploads/1/3/0/7/130740221/varokilimizuwosus.pdf
    • http://files.katascuba.com/uploads/1/3/1/4/131483253/5349126.pdf
    • http://jedibemam.lachaptercebs.org/uploads/1/3/0/7/130739693/fc30c88e28929aa.pdf
    • http://jatusesis.familyaffaircateringandevents.com/uploads/1/3/2/6/132681556/5445615.pdf
    • https://cdn.shopify.com/s/files/1/0432/5212/1762/files/o_reilly_think_python.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4082/files/john_deere_lx178_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.pdf
    • https://cdn.shopify.com/s/files/1/0427/9966/1223/files/47294835975.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78985131446.pdf
    • https://cdn.shopify.com/s/files/1/0431/8029/4306/files/25193848605.pdf
    • https://cdn.shopify.com/s/files/1/0447/4201/7173/files/forex_trading_fundamental_and_technical_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0428/6958/8127/files/rovexi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6408/2073/files/56838002376.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/wosimejamo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5739/files/herbal_plants_with_pictures_and_names_and_uses.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ef5.bin
5c7b97e5d633e6c71d16c2a0ea993bdd8c2ce56c5a7bfeb1db104b3e98392814
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF5 5344 bytes
font_01_sfnt_off0000810d.bin
9cbdf1079331cb0e5e5423d64270ce88cd475e0f9bee28afce56c6549d86fbca
pdf-font-stream PDF embedded font (sfnt) at offset 0x810D 9252 bytes
font_02_sfnt_off00009ef2.bin
d21c22952658ab75bb975f5cbb37ddfd476003b87f9f1a87f8a514dba9d334cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF2 10256 bytes